new file mode 100644
@@ -0,0 +1,129 @@
+Backport of:
+
+From 0f384c88a241bbbd884487b1c40b7b75f1e638d3 Mon Sep 17 00:00:00 2001
+From: Krzesimir Nowak <qdlacz@gmail.com>
+Date: Wed, 10 Feb 2021 23:51:07 +0100
+Subject: [PATCH] gbytearray: Do not accept too large byte arrays
+
+GByteArray uses guint for storing the length of the byte array, but it
+also has a constructor (g_byte_array_new_take) that takes length as a
+gsize. gsize may be larger than guint (64 bits for gsize vs 32 bits
+for guint). It is possible to call the function with a value greater
+than G_MAXUINT, which will result in silent length truncation. This
+may happen as a result of unreffing GBytes into GByteArray, so rather
+be loud about it.
+
+(Test case tweaked by Philip Withnall.)
+
+(Backport 2.66: Add #include gstrfuncsprivate.h in the test case for
+`g_memdup2()`.)
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27218
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ glib/garray.c | 6 ++++++
+ glib/gbytes.c | 4 ++++
+ glib/tests/bytes.c | 35 ++++++++++++++++++++++++++++++++++-
+ 3 files changed, 44 insertions(+), 1 deletion(-)
+
+--- a/glib/garray.c
++++ b/glib/garray.c
+@@ -2234,6 +2234,10 @@ g_byte_array_steal (GByteArray *array,
+ * Create byte array containing the data. The data will be owned by the array
+ * and will be freed with g_free(), i.e. it could be allocated using g_strdup().
+ *
++ * Do not use it if @len is greater than %G_MAXUINT. #GByteArray
++ * stores the length of its data in #guint, which may be shorter than
++ * #gsize.
++ *
+ * Since: 2.32
+ *
+ * Returns: (transfer full): a new #GByteArray
+@@ -2245,6 +2249,8 @@ g_byte_array_new_take (guint8 *data,
+ GByteArray *array;
+ GRealArray *real;
+
++ g_return_val_if_fail (len <= G_MAXUINT, NULL);
++
+ array = g_byte_array_new ();
+ real = (GRealArray *)array;
+ g_assert (real->data == NULL);
+--- a/glib/gbytes.c
++++ b/glib/gbytes.c
+@@ -519,6 +519,10 @@ g_bytes_unref_to_data (GBytes *bytes,
+ * g_bytes_new(), g_bytes_new_take() or g_byte_array_free_to_bytes(). In all
+ * other cases the data is copied.
+ *
++ * Do not use it if @bytes contains more than %G_MAXUINT
++ * bytes. #GByteArray stores the length of its data in #guint, which
++ * may be shorter than #gsize, that @bytes is using.
++ *
+ * Returns: (transfer full): a new mutable #GByteArray containing the same byte data
+ *
+ * Since: 2.32
+--- a/glib/tests/bytes.c
++++ b/glib/tests/bytes.c
+@@ -10,12 +10,12 @@
+ */
+
+ #undef G_DISABLE_ASSERT
+-#undef G_LOG_DOMAIN
+
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include "glib.h"
++#include "glib/gstrfuncsprivate.h"
+
+ /* Keep in sync with glib/gbytes.c */
+ struct _GBytes
+@@ -334,6 +334,38 @@ test_to_array_transferred (void)
+ }
+
+ static void
++test_to_array_transferred_oversize (void)
++{
++ g_test_message ("g_bytes_unref_to_array() can only take GBytes up to "
++ "G_MAXUINT in length; test that longer ones are rejected");
++
++ if (sizeof (guint) >= sizeof (gsize))
++ {
++ g_test_skip ("Skipping test as guint is not smaller than gsize");
++ }
++ else if (g_test_undefined ())
++ {
++ GByteArray *array = NULL;
++ GBytes *bytes = NULL;
++ gpointer data = g_memdup2 (NYAN, N_NYAN);
++ gsize len = ((gsize) G_MAXUINT) + 1;
++
++ bytes = g_bytes_new_take (data, len);
++ g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
++ "g_byte_array_new_take: assertion 'len <= G_MAXUINT' failed");
++ array = g_bytes_unref_to_array (g_steal_pointer (&bytes));
++ g_test_assert_expected_messages ();
++ g_assert_null (array);
++
++ g_free (data);
++ }
++ else
++ {
++ g_test_skip ("Skipping test as testing undefined behaviour is disabled");
++ }
++}
++
++static void
+ test_to_array_two_refs (void)
+ {
+ gconstpointer memory;
+@@ -410,6 +442,7 @@ main (int argc, char *argv[])
+ g_test_add_func ("/bytes/to-array/transfered", test_to_array_transferred);
+ g_test_add_func ("/bytes/to-array/two-refs", test_to_array_two_refs);
+ g_test_add_func ("/bytes/to-array/non-malloc", test_to_array_non_malloc);
++ g_test_add_func ("/bytes/to-array/transferred/oversize", test_to_array_transferred_oversize);
+ g_test_add_func ("/bytes/null", test_null);
+
+ return g_test_run ();
new file mode 100644
@@ -0,0 +1,170 @@
+Backport of:
+
+From 5e5f75a77e399c638be66d74e5daa8caeb433e00 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 13:30:52 +0000
+Subject: [PATCH 01/11] gstrfuncs: Add internal g_memdup2() function
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This will replace the existing `g_memdup()` function for use within
+GLib. It has an unavoidable security flaw of taking its `byte_size`
+argument as a `guint` rather than as a `gsize`. Most callers will
+expect it to be a `gsize`, and may pass in large values which could
+silently be truncated, resulting in an undersize allocation compared
+to what the caller expects.
+
+This could lead to a classic buffer overflow vulnerability for many
+callers of `g_memdup()`.
+
+`g_memdup2()`, in comparison, takes its `byte_size` as a `gsize`.
+
+Spotted by Kevin Backhouse of GHSL.
+
+In GLib 2.68, `g_memdup2()` will be a new public API. In this version
+for backport to older stable releases, it’s a new `static inline` API
+in a private header, so that use of `g_memdup()` within GLib can be
+fixed without adding a new API in a stable release series.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: GHSL-2021-045
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ docs/reference/glib/meson.build | 1 +
+ glib/gstrfuncsprivate.h | 55 +++++++++++++++++++++++++++++++++
+ glib/meson.build | 1 +
+ glib/tests/strfuncs.c | 23 ++++++++++++++
+ 4 files changed, 80 insertions(+)
+ create mode 100644 glib/gstrfuncsprivate.h
+
+--- a/docs/reference/glib/meson.build
++++ b/docs/reference/glib/meson.build
+@@ -22,6 +22,7 @@ if get_option('gtk_doc')
+ 'gprintfint.h',
+ 'gmirroringtable.h',
+ 'gscripttable.h',
++ 'gstrfuncsprivate.h',
+ 'glib-mirroring-tab',
+ 'gnulib',
+ 'pcre',
+--- /dev/null
++++ b/glib/gstrfuncsprivate.h
+@@ -0,0 +1,55 @@
++/* GLIB - Library of useful routines for C programming
++ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
++ *
++ * This library is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU Lesser General Public
++ * License as published by the Free Software Foundation; either
++ * version 2.1 of the License, or (at your option) any later version.
++ *
++ * This library is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ * Lesser General Public License for more details.
++ *
++ * You should have received a copy of the GNU Lesser General Public
++ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
++ */
++
++#include <glib.h>
++#include <string.h>
++
++/*
++ * g_memdup2:
++ * @mem: (nullable): the memory to copy.
++ * @byte_size: the number of bytes to copy.
++ *
++ * Allocates @byte_size bytes of memory, and copies @byte_size bytes into it
++ * from @mem. If @mem is %NULL it returns %NULL.
++ *
++ * This replaces g_memdup(), which was prone to integer overflows when
++ * converting the argument from a #gsize to a #guint.
++ *
++ * This static inline version is a backport of the new public API from
++ * GLib 2.68, kept internal to GLib for backport to older stable releases.
++ * See https://gitlab.gnome.org/GNOME/glib/-/issues/2319.
++ *
++ * Returns: (nullable): a pointer to the newly-allocated copy of the memory,
++ * or %NULL if @mem is %NULL.
++ * Since: 2.68
++ */
++static inline gpointer
++g_memdup2 (gconstpointer mem,
++ gsize byte_size)
++{
++ gpointer new_mem;
++
++ if (mem && byte_size != 0)
++ {
++ new_mem = g_malloc (byte_size);
++ memcpy (new_mem, mem, byte_size);
++ }
++ else
++ new_mem = NULL;
++
++ return new_mem;
++}
+--- a/glib/meson.build
++++ b/glib/meson.build
+@@ -268,6 +268,7 @@ glib_sources = files(
+ 'gslist.c',
+ 'gstdio.c',
+ 'gstrfuncs.c',
++ 'gstrfuncsprivate.h',
+ 'gstring.c',
+ 'gstringchunk.c',
+ 'gtestutils.c',
+--- a/glib/tests/strfuncs.c
++++ b/glib/tests/strfuncs.c
+@@ -32,6 +32,8 @@
+ #include <string.h>
+ #include "glib.h"
+
++#include "gstrfuncsprivate.h"
++
+ #if defined (_MSC_VER) && (_MSC_VER <= 1800)
+ #define isnan(x) _isnan(x)
+
+@@ -219,6 +221,26 @@ test_memdup (void)
+ g_free (str_dup);
+ }
+
++/* Testing g_memdup2() function with various positive and negative cases */
++static void
++test_memdup2 (void)
++{
++ gchar *str_dup = NULL;
++ const gchar *str = "The quick brown fox jumps over the lazy dog";
++
++ /* Testing negative cases */
++ g_assert_null (g_memdup2 (NULL, 1024));
++ g_assert_null (g_memdup2 (str, 0));
++ g_assert_null (g_memdup2 (NULL, 0));
++
++ /* Testing normal usage cases */
++ str_dup = g_memdup2 (str, strlen (str) + 1);
++ g_assert_nonnull (str_dup);
++ g_assert_cmpstr (str, ==, str_dup);
++
++ g_free (str_dup);
++}
++
+ /* Testing g_strpcpy() function with various positive and negative cases */
+ static void
+ test_stpcpy (void)
+@@ -2523,6 +2545,7 @@ main (int argc,
+ g_test_add_func ("/strfuncs/has-prefix", test_has_prefix);
+ g_test_add_func ("/strfuncs/has-suffix", test_has_suffix);
+ g_test_add_func ("/strfuncs/memdup", test_memdup);
++ g_test_add_func ("/strfuncs/memdup2", test_memdup2);
+ g_test_add_func ("/strfuncs/stpcpy", test_stpcpy);
+ g_test_add_func ("/strfuncs/str_match_string", test_str_match_string);
+ g_test_add_func ("/strfuncs/str_tokenize_and_fold", test_str_tokenize_and_fold);
new file mode 100644
@@ -0,0 +1,249 @@
+From be8834340a2d928ece82025463ae23dee2c333d0 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 13:37:56 +0000
+Subject: [PATCH 02/11] gio: Use g_memdup2() instead of g_memdup() in obvious
+ places
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Convert all the call sites which use `g_memdup()`’s length argument
+trivially (for example, by passing a `sizeof()`), so that they use
+`g_memdup2()` instead.
+
+In almost all of these cases the use of `g_memdup()` would not have
+caused problems, but it will soon be deprecated, so best port away from
+it.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/gdbusconnection.c | 5 +++--
+ gio/gdbusinterfaceskeleton.c | 3 ++-
+ gio/gfile.c | 7 ++++---
+ gio/gsettingsschema.c | 5 +++--
+ gio/gwin32registrykey.c | 8 +++++---
+ gio/tests/async-close-output-stream.c | 6 ++++--
+ gio/tests/gdbus-export.c | 5 +++--
+ gio/win32/gwinhttpfile.c | 9 +++++----
+ 8 files changed, 29 insertions(+), 19 deletions(-)
+
+--- a/gio/gdbusconnection.c
++++ b/gio/gdbusconnection.c
+@@ -110,6 +110,7 @@
+ #include "gasyncinitable.h"
+ #include "giostream.h"
+ #include "gasyncresult.h"
++#include "gstrfuncsprivate.h"
+ #include "gtask.h"
+ #include "gmarshal-internal.h"
+
+@@ -4007,7 +4008,7 @@ _g_dbus_interface_vtable_copy (const GDB
+ /* Don't waste memory by copying padding - remember to update this
+ * when changing struct _GDBusInterfaceVTable in gdbusconnection.h
+ */
+- return g_memdup ((gconstpointer) vtable, 3 * sizeof (gpointer));
++ return g_memdup2 ((gconstpointer) vtable, 3 * sizeof (gpointer));
+ }
+
+ static void
+@@ -4024,7 +4025,7 @@ _g_dbus_subtree_vtable_copy (const GDBus
+ /* Don't waste memory by copying padding - remember to update this
+ * when changing struct _GDBusSubtreeVTable in gdbusconnection.h
+ */
+- return g_memdup ((gconstpointer) vtable, 3 * sizeof (gpointer));
++ return g_memdup2 ((gconstpointer) vtable, 3 * sizeof (gpointer));
+ }
+
+ static void
+--- a/gio/gdbusinterfaceskeleton.c
++++ b/gio/gdbusinterfaceskeleton.c
+@@ -28,6 +28,7 @@
+ #include "gdbusmethodinvocation.h"
+ #include "gdbusconnection.h"
+ #include "gmarshal-internal.h"
++#include "gstrfuncsprivate.h"
+ #include "gtask.h"
+ #include "gioerror.h"
+
+@@ -701,7 +702,7 @@ add_connection_locked (GDBusInterfaceSke
+ * properly before building the hooked_vtable, so we create it
+ * once at the last minute.
+ */
+- interface_->priv->hooked_vtable = g_memdup (g_dbus_interface_skeleton_get_vtable (interface_), sizeof (GDBusInterfaceVTable));
++ interface_->priv->hooked_vtable = g_memdup2 (g_dbus_interface_skeleton_get_vtable (interface_), sizeof (GDBusInterfaceVTable));
+ interface_->priv->hooked_vtable->method_call = skeleton_intercept_handle_method_call;
+ }
+
+--- a/gio/gfile.c
++++ b/gio/gfile.c
+@@ -60,6 +60,7 @@
+ #include "gasyncresult.h"
+ #include "gioerror.h"
+ #include "glibintl.h"
++#include "gstrfuncsprivate.h"
+
+
+ /**
+@@ -7854,7 +7855,7 @@ measure_disk_usage_progress (gboolean re
+ g_main_context_invoke_full (g_task_get_context (task),
+ g_task_get_priority (task),
+ measure_disk_usage_invoke_progress,
+- g_memdup (&progress, sizeof progress),
++ g_memdup2 (&progress, sizeof progress),
+ g_free);
+ }
+
+@@ -7872,7 +7873,7 @@ measure_disk_usage_thread (GTask
+ data->progress_callback ? measure_disk_usage_progress : NULL, task,
+ &result.disk_usage, &result.num_dirs, &result.num_files,
+ &error))
+- g_task_return_pointer (task, g_memdup (&result, sizeof result), g_free);
++ g_task_return_pointer (task, g_memdup2 (&result, sizeof result), g_free);
+ else
+ g_task_return_error (task, error);
+ }
+@@ -7896,7 +7897,7 @@ g_file_real_measure_disk_usage_async (GF
+
+ task = g_task_new (file, cancellable, callback, user_data);
+ g_task_set_source_tag (task, g_file_real_measure_disk_usage_async);
+- g_task_set_task_data (task, g_memdup (&data, sizeof data), g_free);
++ g_task_set_task_data (task, g_memdup2 (&data, sizeof data), g_free);
+ g_task_set_priority (task, io_priority);
+
+ g_task_run_in_thread (task, measure_disk_usage_thread);
+--- a/gio/gsettingsschema.c
++++ b/gio/gsettingsschema.c
+@@ -20,6 +20,7 @@
+
+ #include "gsettingsschema-internal.h"
+ #include "gsettings.h"
++#include "gstrfuncsprivate.h"
+
+ #include "gvdb/gvdb-reader.h"
+ #include "strinfo.c"
+@@ -1067,9 +1068,9 @@ g_settings_schema_list_children (GSettin
+
+ if (g_str_has_suffix (key, "/"))
+ {
+- gint length = strlen (key);
++ gsize length = strlen (key);
+
+- strv[j] = g_memdup (key, length);
++ strv[j] = g_memdup2 (key, length);
+ strv[j][length - 1] = '\0';
+ j++;
+ }
+--- a/gio/gwin32registrykey.c
++++ b/gio/gwin32registrykey.c
+@@ -28,6 +28,8 @@
+ #include <ntstatus.h>
+ #include <winternl.h>
+
++#include "gstrfuncsprivate.h"
++
+ #ifndef _WDMDDK_
+ typedef enum _KEY_INFORMATION_CLASS {
+ KeyBasicInformation,
+@@ -247,7 +249,7 @@ g_win32_registry_value_iter_copy (const
+ new_iter->value_name_size = iter->value_name_size;
+
+ if (iter->value_data != NULL)
+- new_iter->value_data = g_memdup (iter->value_data, iter->value_data_size);
++ new_iter->value_data = g_memdup2 (iter->value_data, iter->value_data_size);
+
+ new_iter->value_data_size = iter->value_data_size;
+
+@@ -268,8 +270,8 @@ g_win32_registry_value_iter_copy (const
+ new_iter->value_data_expanded_charsize = iter->value_data_expanded_charsize;
+
+ if (iter->value_data_expanded_u8 != NULL)
+- new_iter->value_data_expanded_u8 = g_memdup (iter->value_data_expanded_u8,
+- iter->value_data_expanded_charsize);
++ new_iter->value_data_expanded_u8 = g_memdup2 (iter->value_data_expanded_u8,
++ iter->value_data_expanded_charsize);
+
+ new_iter->value_data_expanded_u8_size = iter->value_data_expanded_charsize;
+
+--- a/gio/tests/async-close-output-stream.c
++++ b/gio/tests/async-close-output-stream.c
+@@ -24,6 +24,8 @@
+ #include <stdlib.h>
+ #include <string.h>
+
++#include "gstrfuncsprivate.h"
++
+ #define DATA_TO_WRITE "Hello world\n"
+
+ typedef struct
+@@ -147,9 +149,9 @@ prepare_data (SetupData *data,
+
+ data->expected_size = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (data->data_stream));
+
+- g_assert_cmpint (data->expected_size, >, 0);
++ g_assert_cmpuint (data->expected_size, >, 0);
+
+- data->expected_output = g_memdup (written, (guint)data->expected_size);
++ data->expected_output = g_memdup2 (written, data->expected_size);
+
+ /* then recreate the streams and prepare them for the asynchronous close */
+ destroy_streams (data);
+--- a/gio/tests/gdbus-export.c
++++ b/gio/tests/gdbus-export.c
+@@ -23,6 +23,7 @@
+ #include <string.h>
+
+ #include "gdbus-tests.h"
++#include "gstrfuncsprivate.h"
+
+ /* all tests rely on a shared mainloop */
+ static GMainLoop *loop = NULL;
+@@ -671,7 +672,7 @@ subtree_introspect (GDBusConnection
+ g_assert_not_reached ();
+ }
+
+- return g_memdup (interfaces, 2 * sizeof (void *));
++ return g_memdup2 (interfaces, 2 * sizeof (void *));
+ }
+
+ static const GDBusInterfaceVTable *
+@@ -727,7 +728,7 @@ dynamic_subtree_introspect (GDBusConnect
+ {
+ const GDBusInterfaceInfo *interfaces[2] = { &dyna_interface_info, NULL };
+
+- return g_memdup (interfaces, 2 * sizeof (void *));
++ return g_memdup2 (interfaces, 2 * sizeof (void *));
+ }
+
+ static const GDBusInterfaceVTable *
+--- a/gio/win32/gwinhttpfile.c
++++ b/gio/win32/gwinhttpfile.c
+@@ -29,6 +29,7 @@
+ #include "gio/gfile.h"
+ #include "gio/gfileattribute.h"
+ #include "gio/gfileinfo.h"
++#include "gstrfuncsprivate.h"
+ #include "gwinhttpfile.h"
+ #include "gwinhttpfileinputstream.h"
+ #include "gwinhttpfileoutputstream.h"
+@@ -393,10 +394,10 @@
+ child = g_object_new (G_TYPE_WINHTTP_FILE, NULL);
+ child->vfs = winhttp_file->vfs;
+ child->url = winhttp_file->url;
+- child->url.lpszScheme = g_memdup (winhttp_file->url.lpszScheme, (winhttp_file->url.dwSchemeLength+1)*2);
+- child->url.lpszHostName = g_memdup (winhttp_file->url.lpszHostName, (winhttp_file->url.dwHostNameLength+1)*2);
+- child->url.lpszUserName = g_memdup (winhttp_file->url.lpszUserName, (winhttp_file->url.dwUserNameLength+1)*2);
+- child->url.lpszPassword = g_memdup (winhttp_file->url.lpszPassword, (winhttp_file->url.dwPasswordLength+1)*2);
++ child->url.lpszScheme = g_memdup2 (winhttp_file->url.lpszScheme, (winhttp_file->url.dwSchemeLength+1)*2);
++ child->url.lpszHostName = g_memdup2 (winhttp_file->url.lpszHostName, (winhttp_file->url.dwHostNameLength+1)*2);
++ child->url.lpszUserName = g_memdup2 (winhttp_file->url.lpszUserName, (winhttp_file->url.dwUserNameLength+1)*2);
++ child->url.lpszPassword = g_memdup2 (winhttp_file->url.lpszPassword, (winhttp_file->url.dwPasswordLength+1)*2);
+ child->url.lpszUrlPath = wnew_path;
+ child->url.dwUrlPathLength = wcslen (wnew_path);
+ child->url.lpszExtraInfo = NULL;
new file mode 100644
@@ -0,0 +1,131 @@
+From 6110caea45b235420b98cd41d845cc92238f6781 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 13:39:25 +0000
+Subject: [PATCH 03/11] gobject: Use g_memdup2() instead of g_memdup() in
+ obvious places
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Convert all the call sites which use `g_memdup()`’s length argument
+trivially (for example, by passing a `sizeof()`), so that they use
+`g_memdup2()` instead.
+
+In almost all of these cases the use of `g_memdup()` would not have
+caused problems, but it will soon be deprecated, so best port away from
+it.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gobject/gsignal.c | 3 ++-
+ gobject/gtype.c | 9 +++++----
+ gobject/gtypemodule.c | 3 ++-
+ gobject/tests/param.c | 4 +++-
+ 4 files changed, 12 insertions(+), 7 deletions(-)
+
+--- a/gobject/gsignal.c
++++ b/gobject/gsignal.c
+@@ -28,6 +28,7 @@
+ #include <signal.h>
+
+ #include "gsignal.h"
++#include "gstrfuncsprivate.h"
+ #include "gtype-private.h"
+ #include "gbsearcharray.h"
+ #include "gvaluecollector.h"
+@@ -1809,7 +1810,7 @@ g_signal_newv (const gchar *signal
+ node->single_va_closure_is_valid = FALSE;
+ node->flags = signal_flags & G_SIGNAL_FLAGS_MASK;
+ node->n_params = n_params;
+- node->param_types = g_memdup (param_types, sizeof (GType) * n_params);
++ node->param_types = g_memdup2 (param_types, sizeof (GType) * n_params);
+ node->return_type = return_type;
+ node->class_closure_bsa = NULL;
+ if (accumulator)
+--- a/gobject/gtype.c
++++ b/gobject/gtype.c
+@@ -33,6 +33,7 @@
+
+ #include "glib-private.h"
+ #include "gconstructor.h"
++#include "gstrfuncsprivate.h"
+
+ #ifdef G_OS_WIN32
+ #include <windows.h>
+@@ -1470,7 +1471,7 @@ type_add_interface_Wm (TypeNode
+ iholder->next = iface_node_get_holders_L (iface);
+ iface_node_set_holders_W (iface, iholder);
+ iholder->instance_type = NODE_TYPE (node);
+- iholder->info = info ? g_memdup (info, sizeof (*info)) : NULL;
++ iholder->info = info ? g_memdup2 (info, sizeof (*info)) : NULL;
+ iholder->plugin = plugin;
+
+ /* create an iface entry for this type */
+@@ -1731,7 +1732,7 @@ type_iface_retrieve_holder_info_Wm (Type
+ INVALID_RECURSION ("g_type_plugin_*", iholder->plugin, NODE_NAME (iface));
+
+ check_interface_info_I (iface, instance_type, &tmp_info);
+- iholder->info = g_memdup (&tmp_info, sizeof (tmp_info));
++ iholder->info = g_memdup2 (&tmp_info, sizeof (tmp_info));
+ }
+
+ return iholder; /* we don't modify write lock upon returning NULL */
+@@ -2016,10 +2017,10 @@ type_iface_vtable_base_init_Wm (TypeNode
+ IFaceEntry *pentry = type_lookup_iface_entry_L (pnode, iface);
+
+ if (pentry)
+- vtable = g_memdup (pentry->vtable, iface->data->iface.vtable_size);
++ vtable = g_memdup2 (pentry->vtable, iface->data->iface.vtable_size);
+ }
+ if (!vtable)
+- vtable = g_memdup (iface->data->iface.dflt_vtable, iface->data->iface.vtable_size);
++ vtable = g_memdup2 (iface->data->iface.dflt_vtable, iface->data->iface.vtable_size);
+ entry->vtable = vtable;
+ vtable->g_type = NODE_TYPE (iface);
+ vtable->g_instance_type = NODE_TYPE (node);
+--- a/gobject/gtypemodule.c
++++ b/gobject/gtypemodule.c
+@@ -19,6 +19,7 @@
+
+ #include <stdlib.h>
+
++#include "gstrfuncsprivate.h"
+ #include "gtypeplugin.h"
+ #include "gtypemodule.h"
+
+@@ -436,7 +437,7 @@ g_type_module_register_type (GTypeModule
+ module_type_info->loaded = TRUE;
+ module_type_info->info = *type_info;
+ if (type_info->value_table)
+- module_type_info->info.value_table = g_memdup (type_info->value_table,
++ module_type_info->info.value_table = g_memdup2 (type_info->value_table,
+ sizeof (GTypeValueTable));
+
+ return module_type_info->type;
+--- a/gobject/tests/param.c
++++ b/gobject/tests/param.c
+@@ -2,6 +2,8 @@
+ #include <glib-object.h>
+ #include <stdlib.h>
+
++#include "gstrfuncsprivate.h"
++
+ static void
+ test_param_value (void)
+ {
+@@ -874,7 +876,7 @@ main (int argc, char *argv[])
+ test_path = g_strdup_printf ("/param/implement/subprocess/%d-%d-%d-%d",
+ data.change_this_flag, data.change_this_type,
+ data.use_this_flag, data.use_this_type);
+- test_data = g_memdup (&data, sizeof (TestParamImplementData));
++ test_data = g_memdup2 (&data, sizeof (TestParamImplementData));
+ g_test_add_data_func_full (test_path, test_data, test_param_implement_child, g_free);
+ g_free (test_path);
+ }
new file mode 100644
@@ -0,0 +1,298 @@
+Backport of:
+
+From 0736b7c1e7cf4232c5d7eb2b0fbfe9be81bd3baa Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 13:41:21 +0000
+Subject: [PATCH 04/11] glib: Use g_memdup2() instead of g_memdup() in obvious
+ places
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Convert all the call sites which use `g_memdup()`’s length argument
+trivially (for example, by passing a `sizeof()` or an existing `gsize`
+variable), so that they use `g_memdup2()` instead.
+
+In almost all of these cases the use of `g_memdup()` would not have
+caused problems, but it will soon be deprecated, so best port away from
+it
+
+In particular, this fixes an overflow within `g_bytes_new()`, identified
+as GHSL-2021-045 by GHSL team member Kevin Backhouse.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Fixes: GHSL-2021-045
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ glib/gbytes.c | 6 ++++--
+ glib/gdir.c | 3 ++-
+ glib/ghash.c | 7 ++++---
+ glib/giochannel.c | 5 +++--
+ glib/gslice.c | 3 ++-
+ glib/gtestutils.c | 3 ++-
+ glib/gvariant.c | 7 ++++---
+ glib/gvarianttype.c | 3 ++-
+ glib/tests/array-test.c | 4 +++-
+ glib/tests/option-context.c | 6 ++++--
+ glib/tests/uri.c | 8 +++++---
+ 11 files changed, 35 insertions(+), 20 deletions(-)
+
+--- a/glib/gbytes.c
++++ b/glib/gbytes.c
+@@ -34,6 +34,8 @@
+
+ #include <string.h>
+
++#include "gstrfuncsprivate.h"
++
+ /**
+ * GBytes:
+ *
+@@ -95,7 +97,7 @@ g_bytes_new (gconstpointer data,
+ {
+ g_return_val_if_fail (data != NULL || size == 0, NULL);
+
+- return g_bytes_new_take (g_memdup (data, size), size);
++ return g_bytes_new_take (g_memdup2 (data, size), size);
+ }
+
+ /**
+@@ -499,7 +501,7 @@ g_bytes_unref_to_data (GBytes *bytes,
+ * Copy: Non g_malloc (or compatible) allocator, or static memory,
+ * so we have to copy, and then unref.
+ */
+- result = g_memdup (bytes->data, bytes->size);
++ result = g_memdup2 (bytes->data, bytes->size);
+ *size = bytes->size;
+ g_bytes_unref (bytes);
+ }
+--- a/glib/gdir.c
++++ b/glib/gdir.c
+@@ -37,6 +37,7 @@
+ #include "gconvert.h"
+ #include "gfileutils.h"
+ #include "gstrfuncs.h"
++#include "gstrfuncsprivate.h"
+ #include "gtestutils.h"
+ #include "glibintl.h"
+
+@@ -112,7 +113,7 @@ g_dir_open_with_errno (const gchar *path
+ return NULL;
+ #endif
+
+- return g_memdup (&dir, sizeof dir);
++ return g_memdup2 (&dir, sizeof dir);
+ }
+
+ /**
+--- a/glib/ghash.c
++++ b/glib/ghash.c
+@@ -34,6 +34,7 @@
+ #include "gmacros.h"
+ #include "glib-private.h"
+ #include "gstrfuncs.h"
++#include "gstrfuncsprivate.h"
+ #include "gatomic.h"
+ #include "gtestutils.h"
+ #include "gslice.h"
+@@ -962,7 +963,7 @@ g_hash_table_ensure_keyval_fits (GHashTa
+ if (hash_table->have_big_keys)
+ {
+ if (key != value)
+- hash_table->values = g_memdup (hash_table->keys, sizeof (gpointer) * hash_table->size);
++ hash_table->values = g_memdup2 (hash_table->keys, sizeof (gpointer) * hash_table->size);
+ /* Keys and values are both big now, so no need for further checks */
+ return;
+ }
+@@ -970,7 +971,7 @@ g_hash_table_ensure_keyval_fits (GHashTa
+ {
+ if (key != value)
+ {
+- hash_table->values = g_memdup (hash_table->keys, sizeof (guint) * hash_table->size);
++ hash_table->values = g_memdup2 (hash_table->keys, sizeof (guint) * hash_table->size);
+ is_a_set = FALSE;
+ }
+ }
+@@ -998,7 +999,7 @@ g_hash_table_ensure_keyval_fits (GHashTa
+
+ /* Just split if necessary */
+ if (is_a_set && key != value)
+- hash_table->values = g_memdup (hash_table->keys, sizeof (gpointer) * hash_table->size);
++ hash_table->values = g_memdup2 (hash_table->keys, sizeof (gpointer) * hash_table->size);
+
+ #endif
+ }
+--- a/glib/giochannel.c
++++ b/glib/giochannel.c
+@@ -35,7 +35,7 @@
+ #include <errno.h>
+
+ #include "giochannel.h"
+-
++#include "gstrfuncsprivate.h"
+ #include "gstrfuncs.h"
+ #include "gtestutils.h"
+ #include "glibintl.h"
+
+@@ -1673,10 +1674,10 @@ g_io_channel_read_line (GIOChannel *cha
+
+ /* Copy the read bytes (including any embedded nuls) and nul-terminate.
+ * `USE_BUF (channel)->str` is guaranteed to be nul-terminated as it’s a
+- * #GString, so it’s safe to call g_memdup() with +1 length to allocate
++ * #GString, so it’s safe to call g_memdup2() with +1 length to allocate
+ * a nul-terminator. */
+ g_assert (USE_BUF (channel));
+- line = g_memdup (USE_BUF (channel)->str, got_length + 1);
++ line = g_memdup2 (USE_BUF (channel)->str, got_length + 1);
+ line[got_length] = '\0';
+ *str_return = g_steal_pointer (&line);
+ g_string_erase (USE_BUF (channel), 0, got_length);
+--- a/glib/gslice.c
++++ b/glib/gslice.c
+@@ -41,6 +41,7 @@
+ #include "gmain.h"
+ #include "gmem.h" /* gslice.h */
+ #include "gstrfuncs.h"
++#include "gstrfuncsprivate.h"
+ #include "gutils.h"
+ #include "gtrashstack.h"
+ #include "gtestutils.h"
+@@ -350,7 +351,7 @@ g_slice_get_config_state (GSliceConfig c
+ array[i++] = allocator->contention_counters[address];
+ array[i++] = allocator_get_magazine_threshold (allocator, address);
+ *n_values = i;
+- return g_memdup (array, sizeof (array[0]) * *n_values);
++ return g_memdup2 (array, sizeof (array[0]) * *n_values);
+ default:
+ return NULL;
+ }
+--- a/glib/gtestutils.c
++++ b/glib/gtestutils.c
+@@ -49,6 +49,7 @@
+ #include "gpattern.h"
+ #include "grand.h"
+ #include "gstrfuncs.h"
++#include "gstrfuncsprivate.h"
+ #include "gtimer.h"
+ #include "gslice.h"
+ #include "gspawn.h"
+@@ -3803,7 +3804,7 @@ g_test_log_extract (GTestLogBuffer *tbuf
+ if (p <= tbuffer->data->str + mlength)
+ {
+ g_string_erase (tbuffer->data, 0, mlength);
+- tbuffer->msgs = g_slist_prepend (tbuffer->msgs, g_memdup (&msg, sizeof (msg)));
++ tbuffer->msgs = g_slist_prepend (tbuffer->msgs, g_memdup2 (&msg, sizeof (msg)));
+ return TRUE;
+ }
+
+--- a/glib/gvariant.c
++++ b/glib/gvariant.c
+@@ -33,6 +33,7 @@
+
+ #include <string.h>
+
++#include "gstrfuncsprivate.h"
+
+ /**
+ * SECTION:gvariant
+@@ -725,7 +726,7 @@ g_variant_new_variant (GVariant *value)
+ g_variant_ref_sink (value);
+
+ return g_variant_new_from_children (G_VARIANT_TYPE_VARIANT,
+- g_memdup (&value, sizeof value),
++ g_memdup2 (&value, sizeof value),
+ 1, g_variant_is_trusted (value));
+ }
+
+@@ -1229,7 +1230,7 @@ g_variant_new_fixed_array (const GVarian
+ return NULL;
+ }
+
+- data = g_memdup (elements, n_elements * element_size);
++ data = g_memdup2 (elements, n_elements * element_size);
+ value = g_variant_new_from_data (array_type, data,
+ n_elements * element_size,
+ FALSE, g_free, data);
+@@ -1908,7 +1909,7 @@ g_variant_dup_bytestring (GVariant *valu
+ if (length)
+ *length = size;
+
+- return g_memdup (original, size + 1);
++ return g_memdup2 (original, size + 1);
+ }
+
+ /**
+--- a/glib/gvarianttype.c
++++ b/glib/gvarianttype.c
+@@ -28,6 +28,7 @@
+
+ #include <string.h>
+
++#include "gstrfuncsprivate.h"
+
+ /**
+ * SECTION:gvarianttype
+@@ -1181,7 +1182,7 @@ g_variant_type_new_tuple (const GVariant
+ g_assert (offset < sizeof buffer);
+ buffer[offset++] = ')';
+
+- return (GVariantType *) g_memdup (buffer, offset);
++ return (GVariantType *) g_memdup2 (buffer, offset);
+ }
+
+ /**
+--- a/glib/tests/array-test.c
++++ b/glib/tests/array-test.c
+@@ -29,6 +29,8 @@
+ #include <string.h>
+ #include "glib.h"
+
++#include "gstrfuncsprivate.h"
++
+ /* Test data to be passed to any function which calls g_array_new(), providing
+ * the parameters for that call. Most #GArray tests should be repeated for all
+ * possible values of #ArrayTestData. */
+@@ -1917,7 +1919,7 @@ byte_array_new_take (void)
+ GByteArray *gbarray;
+ guint8 *data;
+
+- data = g_memdup ("woooweeewow", 11);
++ data = g_memdup2 ("woooweeewow", 11);
+ gbarray = g_byte_array_new_take (data, 11);
+ g_assert (gbarray->data == data);
+ g_assert_cmpuint (gbarray->len, ==, 11);
+--- a/glib/tests/option-context.c
++++ b/glib/tests/option-context.c
+@@ -27,6 +27,8 @@
+ #include <string.h>
+ #include <locale.h>
+
++#include "gstrfuncsprivate.h"
++
+ static GOptionEntry main_entries[] = {
+ { "main-switch", 0, 0,
+ G_OPTION_ARG_NONE, NULL,
+@@ -256,7 +258,7 @@ join_stringv (int argc, char **argv)
+ static char **
+ copy_stringv (char **argv, int argc)
+ {
+- return g_memdup (argv, sizeof (char *) * (argc + 1));
++ return g_memdup2 (argv, sizeof (char *) * (argc + 1));
+ }
+
+ static void
+@@ -2323,7 +2325,7 @@ test_group_parse (void)
+ g_option_context_add_group (context, group);
+
+ argv = split_string ("program --test arg1 -f arg2 --group-test arg3 --frob arg4 -z arg5", &argc);
+- orig_argv = g_memdup (argv, (argc + 1) * sizeof (char *));
++ orig_argv = g_memdup2 (argv, (argc + 1) * sizeof (char *));
+
+ retval = g_option_context_parse (context, &argc, &argv, &error);
+
new file mode 100644
@@ -0,0 +1,54 @@
+From 0cbad673215ec8a049b7fe2ff44b0beed31b376e Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 16:12:24 +0000
+Subject: [PATCH 05/11] gwinhttpfile: Avoid arithmetic overflow when
+ calculating a size
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The members of `URL_COMPONENTS` (`winhttp_file->url`) are `DWORD`s, i.e.
+32-bit unsigned integers. Adding to and multiplying them may cause them
+to overflow the unsigned integer bounds, even if the result is passed to
+`g_memdup2()` which accepts a `gsize`.
+
+Cast the `URL_COMPONENTS` members to `gsize` first to ensure that the
+arithmetic is done in terms of `gsize`s rather than unsigned integers.
+
+Spotted by Sebastian Dröge.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/win32/gwinhttpfile.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/gio/win32/gwinhttpfile.c b/gio/win32/gwinhttpfile.c
+index 3f8fbd838..e0340e247 100644
+--- a/gio/win32/gwinhttpfile.c
++++ b/gio/win32/gwinhttpfile.c
+@@ -410,10 +410,10 @@ g_winhttp_file_resolve_relative_path (GFile *file,
+ child = g_object_new (G_TYPE_WINHTTP_FILE, NULL);
+ child->vfs = winhttp_file->vfs;
+ child->url = winhttp_file->url;
+- child->url.lpszScheme = g_memdup2 (winhttp_file->url.lpszScheme, (winhttp_file->url.dwSchemeLength+1)*2);
+- child->url.lpszHostName = g_memdup2 (winhttp_file->url.lpszHostName, (winhttp_file->url.dwHostNameLength+1)*2);
+- child->url.lpszUserName = g_memdup2 (winhttp_file->url.lpszUserName, (winhttp_file->url.dwUserNameLength+1)*2);
+- child->url.lpszPassword = g_memdup2 (winhttp_file->url.lpszPassword, (winhttp_file->url.dwPasswordLength+1)*2);
++ child->url.lpszScheme = g_memdup2 (winhttp_file->url.lpszScheme, ((gsize) winhttp_file->url.dwSchemeLength + 1) * 2);
++ child->url.lpszHostName = g_memdup2 (winhttp_file->url.lpszHostName, ((gsize) winhttp_file->url.dwHostNameLength + 1) * 2);
++ child->url.lpszUserName = g_memdup2 (winhttp_file->url.lpszUserName, ((gsize) winhttp_file->url.dwUserNameLength + 1) * 2);
++ child->url.lpszPassword = g_memdup2 (winhttp_file->url.lpszPassword, ((gsize) winhttp_file->url.dwPasswordLength + 1) * 2);
+ child->url.lpszUrlPath = wnew_path;
+ child->url.dwUrlPathLength = wcslen (wnew_path);
+ child->url.lpszExtraInfo = NULL;
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,101 @@
+From f9ee2275cbc312c0b4cdbc338a4fbb76eb36fb9a Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 13:49:00 +0000
+Subject: [PATCH 06/11] gdatainputstream: Handle stop_chars_len internally as
+ gsize
+
+Previously it was handled as a `gssize`, which meant that if the
+`stop_chars` string was longer than `G_MAXSSIZE` there would be an
+overflow.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/gdatainputstream.c | 25 +++++++++++++++++--------
+ 1 file changed, 17 insertions(+), 8 deletions(-)
+
+diff --git a/gio/gdatainputstream.c b/gio/gdatainputstream.c
+index 2e7750cb5..2cdcbda19 100644
+--- a/gio/gdatainputstream.c
++++ b/gio/gdatainputstream.c
+@@ -27,6 +27,7 @@
+ #include "gioenumtypes.h"
+ #include "gioerror.h"
+ #include "glibintl.h"
++#include "gstrfuncsprivate.h"
+
+ #include <string.h>
+
+@@ -856,7 +857,7 @@ static gssize
+ scan_for_chars (GDataInputStream *stream,
+ gsize *checked_out,
+ const char *stop_chars,
+- gssize stop_chars_len)
++ gsize stop_chars_len)
+ {
+ GBufferedInputStream *bstream;
+ const char *buffer;
+@@ -952,7 +953,7 @@ typedef struct
+ gsize checked;
+
+ gchar *stop_chars;
+- gssize stop_chars_len;
++ gsize stop_chars_len;
+ gsize length;
+ } GDataInputStreamReadData;
+
+@@ -1078,12 +1079,17 @@ g_data_input_stream_read_async (GDataInputStream *stream,
+ {
+ GDataInputStreamReadData *data;
+ GTask *task;
++ gsize stop_chars_len_unsigned;
+
+ data = g_slice_new0 (GDataInputStreamReadData);
+- if (stop_chars_len == -1)
+- stop_chars_len = strlen (stop_chars);
+- data->stop_chars = g_memdup (stop_chars, stop_chars_len);
+- data->stop_chars_len = stop_chars_len;
++
++ if (stop_chars_len < 0)
++ stop_chars_len_unsigned = strlen (stop_chars);
++ else
++ stop_chars_len_unsigned = (gsize) stop_chars_len;
++
++ data->stop_chars = g_memdup2 (stop_chars, stop_chars_len_unsigned);
++ data->stop_chars_len = stop_chars_len_unsigned;
+ data->last_saw_cr = FALSE;
+
+ task = g_task_new (stream, cancellable, callback, user_data);
+@@ -1338,17 +1344,20 @@ g_data_input_stream_read_upto (GDataInputStream *stream,
+ gssize found_pos;
+ gssize res;
+ char *data_until;
++ gsize stop_chars_len_unsigned;
+
+ g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), NULL);
+
+ if (stop_chars_len < 0)
+- stop_chars_len = strlen (stop_chars);
++ stop_chars_len_unsigned = strlen (stop_chars);
++ else
++ stop_chars_len_unsigned = (gsize) stop_chars_len;
+
+ bstream = G_BUFFERED_INPUT_STREAM (stream);
+
+ checked = 0;
+
+- while ((found_pos = scan_for_chars (stream, &checked, stop_chars, stop_chars_len)) == -1)
++ while ((found_pos = scan_for_chars (stream, &checked, stop_chars, stop_chars_len_unsigned)) == -1)
+ {
+ if (g_buffered_input_stream_get_available (bstream) ==
+ g_buffered_input_stream_get_buffer_size (bstream))
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,76 @@
+From 2aaf593a9eb96d84fe3be740aca2810a97d95592 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 13:50:37 +0000
+Subject: [PATCH 07/11] gwin32: Use gsize internally in g_wcsdup()
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This allows it to handle strings up to length `G_MAXSIZE` — previously
+it would overflow with such strings.
+
+Update the several copies of it identically.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/gwin32registrykey.c | 34 ++++++++++++++++++++++++++--------
+ 2 files changed, 38 insertions(+), 16 deletions(-)
+
+diff --git a/gio/gwin32registrykey.c b/gio/gwin32registrykey.c
+index 548a94188..2eb67daf8 100644
+--- a/gio/gwin32registrykey.c
++++ b/gio/gwin32registrykey.c
+@@ -127,16 +127,34 @@ typedef enum
+ G_WIN32_REGISTRY_UPDATED_PATH = 1,
+ } GWin32RegistryKeyUpdateFlag;
+
++static gsize
++g_utf16_len (const gunichar2 *str)
++{
++ gsize result;
++
++ for (result = 0; str[0] != 0; str++, result++)
++ ;
++
++ return result;
++}
++
+ static gunichar2 *
+-g_wcsdup (const gunichar2 *str,
+- gssize str_size)
++g_wcsdup (const gunichar2 *str, gssize str_len)
+ {
+- if (str_size == -1)
+- {
+- str_size = wcslen (str) + 1;
+- str_size *= sizeof (gunichar2);
+- }
+- return g_memdup (str, str_size);
++ gsize str_len_unsigned;
++ gsize str_size;
++
++ g_return_val_if_fail (str != NULL, NULL);
++
++ if (str_len < 0)
++ str_len_unsigned = g_utf16_len (str);
++ else
++ str_len_unsigned = (gsize) str_len;
++
++ g_assert (str_len_unsigned <= G_MAXSIZE / sizeof (gunichar2) - 1);
++ str_size = (str_len_unsigned + 1) * sizeof (gunichar2);
++
++ return g_memdup2 (str, str_size);
+ }
+
+ /**
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,101 @@
+From ba8ca443051f93a74c0d03d62e70402036f967a5 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 13:58:32 +0000
+Subject: [PATCH 08/11] gkeyfilesettingsbackend: Handle long keys when
+ converting paths
+
+Previously, the code in `convert_path()` could not handle keys longer
+than `G_MAXINT`, and would overflow if that was exceeded.
+
+Convert the code to use `gsize` and `g_memdup2()` throughout, and
+change from identifying the position of the final slash in the string
+using a signed offset `i`, to using a pointer to the character (and
+`strrchr()`). This allows the slash to be at any position in a
+`G_MAXSIZE`-long string, without sacrificing a bit of the offset for
+indicating whether a slash was found.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/gkeyfilesettingsbackend.c | 21 ++++++++++-----------
+ 1 file changed, 10 insertions(+), 11 deletions(-)
+
+diff --git a/gio/gkeyfilesettingsbackend.c b/gio/gkeyfilesettingsbackend.c
+index cd5765afd..25b057672 100644
+--- a/gio/gkeyfilesettingsbackend.c
++++ b/gio/gkeyfilesettingsbackend.c
+@@ -33,6 +33,7 @@
+ #include "gfilemonitor.h"
+ #include "gsimplepermission.h"
+ #include "gsettingsbackendinternal.h"
++#include "gstrfuncsprivate.h"
+ #include "giomodule-priv.h"
+ #include "gportalsupport.h"
+
+@@ -145,8 +146,8 @@ convert_path (GKeyfileSettingsBackend *kfsb,
+ gchar **group,
+ gchar **basename)
+ {
+- gint key_len = strlen (key);
+- gint i;
++ gsize key_len = strlen (key);
++ const gchar *last_slash;
+
+ if (key_len < kfsb->prefix_len ||
+ memcmp (key, kfsb->prefix, kfsb->prefix_len) != 0)
+@@ -155,38 +156,36 @@ convert_path (GKeyfileSettingsBackend *kfsb,
+ key_len -= kfsb->prefix_len;
+ key += kfsb->prefix_len;
+
+- for (i = key_len; i >= 0; i--)
+- if (key[i] == '/')
+- break;
++ last_slash = strrchr (key, '/');
+
+ if (kfsb->root_group)
+ {
+ /* if a root_group was specified, make sure the user hasn't given
+ * a path that ghosts that group name
+ */
+- if (i == kfsb->root_group_len && memcmp (key, kfsb->root_group, i) == 0)
++ if (last_slash != NULL && (last_slash - key) == kfsb->root_group_len && memcmp (key, kfsb->root_group, last_slash - key) == 0)
+ return FALSE;
+ }
+ else
+ {
+ /* if no root_group was given, ensure that the user gave a path */
+- if (i == -1)
++ if (last_slash == NULL)
+ return FALSE;
+ }
+
+ if (group)
+ {
+- if (i >= 0)
++ if (last_slash != NULL)
+ {
+- *group = g_memdup (key, i + 1);
+- (*group)[i] = '\0';
++ *group = g_memdup2 (key, (last_slash - key) + 1);
++ (*group)[(last_slash - key)] = '\0';
+ }
+ else
+ *group = g_strdup (kfsb->root_group);
+ }
+
+ if (basename)
+- *basename = g_memdup (key + i + 1, key_len - i);
++ *basename = g_memdup2 (last_slash + 1, key_len - (last_slash - key));
+
+ return TRUE;
+ }
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,100 @@
+From 65ec7f4d6e8832c481f6e00e2eb007b9a60024ce Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 14:00:53 +0000
+Subject: [PATCH 09/11] =?UTF-8?q?gsocket:=20Use=20gsize=20to=20track=20nat?=
+ =?UTF-8?q?ive=20sockaddr=E2=80=99s=20size?=
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Don’t use an `int`, that’s potentially too small. In practical terms,
+this is not a problem, since no socket address is going to be that big.
+
+By making these changes we can use `g_memdup2()` without warnings,
+though. Fewer warnings is good.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/gsocket.c | 16 ++++++++++------
+ 1 file changed, 10 insertions(+), 6 deletions(-)
+
+--- a/gio/gsocket.c
++++ b/gio/gsocket.c
+@@ -75,6 +75,7 @@
+ #include "gcredentialsprivate.h"
+ #include "glibintl.h"
+ #include "gioprivate.h"
++#include "gstrfuncsprivate.h"
+
+ #ifdef G_OS_WIN32
+ /* For Windows XP runtime compatibility, but use the system's if_nametoindex() if available */
+@@ -174,7 +175,7 @@ static gboolean g_socket_datagram_ba
+ GError **error);
+
+ static GSocketAddress *
+-cache_recv_address (GSocket *socket, struct sockaddr *native, int native_len);
++cache_recv_address (GSocket *socket, struct sockaddr *native, size_t native_len);
+
+ static gssize
+ g_socket_receive_message_with_timeout (GSocket *socket,
+@@ -260,7 +261,7 @@ struct _GSocketPrivate
+ struct {
+ GSocketAddress *addr;
+ struct sockaddr *native;
+- gint native_len;
++ gsize native_len;
+ guint64 last_used;
+ } recv_addr_cache[RECV_ADDR_CACHE_SIZE];
+ };
+@@ -5259,14 +5260,14 @@ g_socket_send_messages_with_timeout (GSo
+ }
+
+ static GSocketAddress *
+-cache_recv_address (GSocket *socket, struct sockaddr *native, int native_len)
++cache_recv_address (GSocket *socket, struct sockaddr *native, size_t native_len)
+ {
+ GSocketAddress *saddr;
+ gint i;
+ guint64 oldest_time = G_MAXUINT64;
+ gint oldest_index = 0;
+
+- if (native_len <= 0)
++ if (native_len == 0)
+ return NULL;
+
+ saddr = NULL;
+@@ -5274,7 +5275,7 @@ cache_recv_address (GSocket *socket, str
+ {
+ GSocketAddress *tmp = socket->priv->recv_addr_cache[i].addr;
+ gpointer tmp_native = socket->priv->recv_addr_cache[i].native;
+- gint tmp_native_len = socket->priv->recv_addr_cache[i].native_len;
++ gsize tmp_native_len = socket->priv->recv_addr_cache[i].native_len;
+
+ if (!tmp)
+ continue;
+@@ -5304,7 +5305,7 @@ cache_recv_address (GSocket *socket, str
+ g_free (socket->priv->recv_addr_cache[oldest_index].native);
+ }
+
+- socket->priv->recv_addr_cache[oldest_index].native = g_memdup (native, native_len);
++ socket->priv->recv_addr_cache[oldest_index].native = g_memdup2 (native, native_len);
+ socket->priv->recv_addr_cache[oldest_index].native_len = native_len;
+ socket->priv->recv_addr_cache[oldest_index].addr = g_object_ref (saddr);
+ socket->priv->recv_addr_cache[oldest_index].last_used = g_get_monotonic_time ();
+@@ -5452,6 +5453,9 @@ g_socket_receive_message_with_timeout (G
+ /* do it */
+ while (1)
+ {
++ /* addrlen has to be of type int because that’s how WSARecvFrom() is defined */
++ G_STATIC_ASSERT (sizeof addr <= G_MAXINT);
++
+ addrlen = sizeof addr;
+ if (address)
+ result = WSARecvFrom (socket->priv->fd,
new file mode 100644
@@ -0,0 +1,59 @@
+From 777b95a88f006d39d9fe6d3321db17e7b0d4b9a4 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 14:07:39 +0000
+Subject: [PATCH 10/11] gtlspassword: Forbid very long TLS passwords
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The public API `g_tls_password_set_value_full()` (and the vfunc it
+invokes) can only accept a `gssize` length. Ensure that nul-terminated
+strings passed to `g_tls_password_set_value()` can’t exceed that length.
+Use `g_memdup2()` to avoid an overflow if they’re longer than
+`G_MAXUINT` similarly.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/gtlspassword.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/gio/gtlspassword.c b/gio/gtlspassword.c
+index 1e437a7b6..dbcec41a8 100644
+--- a/gio/gtlspassword.c
++++ b/gio/gtlspassword.c
+@@ -23,6 +23,7 @@
+ #include "glibintl.h"
+
+ #include "gioenumtypes.h"
++#include "gstrfuncsprivate.h"
+ #include "gtlspassword.h"
+
+ #include <string.h>
+@@ -287,9 +288,14 @@ g_tls_password_set_value (GTlsPassword *password,
+ g_return_if_fail (G_IS_TLS_PASSWORD (password));
+
+ if (length < 0)
+- length = strlen ((gchar *)value);
++ {
++ /* FIXME: g_tls_password_set_value_full() doesn’t support unsigned gsize */
++ gsize length_unsigned = strlen ((gchar *) value);
++ g_return_if_fail (length_unsigned > G_MAXSSIZE);
++ length = (gssize) length_unsigned;
++ }
+
+- g_tls_password_set_value_full (password, g_memdup (value, length), length, g_free);
++ g_tls_password_set_value_full (password, g_memdup2 (value, (gsize) length), length, g_free);
+ }
+
+ /**
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,63 @@
+From ecdf91400e9a538695a0895b95ad7e8abcdf1749 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Thu, 4 Feb 2021 14:09:40 +0000
+Subject: [PATCH 11/11] giochannel: Forbid very long line terminator strings
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The public API `GIOChannel.line_term_len` is only a `guint`. Ensure that
+nul-terminated strings passed to `g_io_channel_set_line_term()` can’t
+exceed that length. Use `g_memdup2()` to avoid a warning (`g_memdup()`
+is due to be deprecated), but not to avoid a bug, since it’s also
+limited to `G_MAXUINT`.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+Helps: #2319
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ glib/giochannel.c | 17 +++++++++++++----
+ 1 file changed, 13 insertions(+), 4 deletions(-)
+
+diff --git a/glib/giochannel.c b/glib/giochannel.c
+index c6a89d6e0..4dec20f77 100644
+--- a/glib/giochannel.c
++++ b/glib/giochannel.c
+@@ -887,16 +887,25 @@ g_io_channel_set_line_term (GIOChannel *channel,
+ const gchar *line_term,
+ gint length)
+ {
++ guint length_unsigned;
++
+ g_return_if_fail (channel != NULL);
+ g_return_if_fail (line_term == NULL || length != 0); /* Disallow "" */
+
+ if (line_term == NULL)
+- length = 0;
+- else if (length < 0)
+- length = strlen (line_term);
++ length_unsigned = 0;
++ else if (length >= 0)
++ length_unsigned = (guint) length;
++ else
++ {
++ /* FIXME: We’re constrained by line_term_len being a guint here */
++ gsize length_size = strlen (line_term);
++ g_return_if_fail (length_size > G_MAXUINT);
++ length_unsigned = (guint) length_size;
++ }
+
+ g_free (channel->line_term);
+- channel->line_term = line_term ? g_memdup (line_term, length) : NULL;
++ channel->line_term = line_term ? g_memdup2 (line_term, length_unsigned) : NULL;
+ channel->line_term_len = length;
+ }
+
+--
+GitLab
+
new file mode 100644
@@ -0,0 +1,36 @@
+From f8273b9aded135fe07094faebd527e43851aaf6e Mon Sep 17 00:00:00 2001
+From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
+Date: Sun, 7 Feb 2021 23:32:40 +0100
+Subject: [PATCH 1/5] giochannel: Fix length_size bounds check
+
+The inverted condition is an obvious error introduced by ecdf91400e9a.
+
+Fixes https://gitlab.gnome.org/GNOME/glib/-/issues/2323
+
+(cherry picked from commit a149bf2f9030168051942124536e303af8ba6176)
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ glib/giochannel.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/glib/giochannel.c b/glib/giochannel.c
+index 4dec20f77..c3f3102ff 100644
+--- a/glib/giochannel.c
++++ b/glib/giochannel.c
+@@ -896,7 +896,7 @@ g_io_channel_set_line_term (GIOChannel *channel,
+ {
+ /* FIXME: We’re constrained by line_term_len being a guint here */
+ gsize length_size = strlen (line_term);
+- g_return_if_fail (length_size > G_MAXUINT);
++ g_return_if_fail (length_size <= G_MAXUINT);
+ length_unsigned = (guint) length_size;
+ }
+
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,38 @@
+From e069c50467712e6d607822afd6b6c15c2c343dff Mon Sep 17 00:00:00 2001
+From: Simon McVittie <smcv@collabora.com>
+Date: Mon, 8 Feb 2021 10:34:50 +0000
+Subject: [PATCH 2/5] giochannel: Don't store negative line_term_len in
+ GIOChannel struct
+
+Adding test coverage indicated that this was another bug in 0cc11f74.
+
+Fixes: 0cc11f74 "giochannel: Forbid very long line terminator strings"
+Resolves: https://gitlab.gnome.org/GNOME/glib/-/issues/2323
+Signed-off-by: Simon McVittie <smcv@collabora.com>
+(cherry picked from commit 5dc8b0014c03e7491d93b90275ab442e888a9628)
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ glib/giochannel.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/glib/giochannel.c b/glib/giochannel.c
+index c3f3102ff..19bb06ba6 100644
+--- a/glib/giochannel.c
++++ b/glib/giochannel.c
+@@ -902,7 +902,7 @@ g_io_channel_set_line_term (GIOChannel *channel,
+
+ g_free (channel->line_term);
+ channel->line_term = line_term ? g_memdup2 (line_term, length_unsigned) : NULL;
+- channel->line_term_len = length;
++ channel->line_term_len = length_unsigned;
+ }
+
+ /**
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,38 @@
+From 4506d1859a863087598c8d122740bae25b65b099 Mon Sep 17 00:00:00 2001
+From: Simon McVittie <smcv@collabora.com>
+Date: Mon, 8 Feb 2021 10:04:48 +0000
+Subject: [PATCH 4/5] gtlspassword: Fix inverted assertion
+
+The intention here was to assert that the length of the password fits
+in a gssize. Passwords more than half the size of virtual memory are
+probably excessive.
+
+Fixes: a8b204ff "gtlspassword: Forbid very long TLS passwords"
+Signed-off-by: Simon McVittie <smcv@collabora.com>
+(cherry picked from commit 61bb52ec42de1082bfb06ce1c737fc295bfe60b8)
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/gtlspassword.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/gio/gtlspassword.c b/gio/gtlspassword.c
+index dbcec41a8..bd86a6dfe 100644
+--- a/gio/gtlspassword.c
++++ b/gio/gtlspassword.c
+@@ -291,7 +291,7 @@ g_tls_password_set_value (GTlsPassword *password,
+ {
+ /* FIXME: g_tls_password_set_value_full() doesn’t support unsigned gsize */
+ gsize length_unsigned = strlen ((gchar *) value);
+- g_return_if_fail (length_unsigned > G_MAXSSIZE);
++ g_return_if_fail (length_unsigned <= G_MAXSSIZE);
+ length = (gssize) length_unsigned;
+ }
+
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,100 @@
+From 3d1550354c3c6a8491c39881752d51cb7515f2c2 Mon Sep 17 00:00:00 2001
+From: Simon McVittie <smcv@collabora.com>
+Date: Mon, 8 Feb 2021 10:22:39 +0000
+Subject: [PATCH 5/5] tls-interaction: Add test coverage for various ways to
+ set the password
+
+Signed-off-by: Simon McVittie <smcv@collabora.com>
+(cherry picked from commit df4501316ca3903072400504a5ea76498db19538)
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/tests/tls-interaction.c | 55 +++++++++++++++++++++++++++++++++++++
+ 1 file changed, 55 insertions(+)
+
+diff --git a/gio/tests/tls-interaction.c b/gio/tests/tls-interaction.c
+index 4f0737d7e..5661e8e0d 100644
+--- a/gio/tests/tls-interaction.c
++++ b/gio/tests/tls-interaction.c
+@@ -174,6 +174,38 @@ test_interaction_ask_password_finish_failure (GTlsInteraction *interaction,
+ }
+
+
++/* Return a copy of @str that is allocated in a silly way, to exercise
++ * custom free-functions. The returned pointer points to a copy of @str
++ * in a buffer of the form "BEFORE \0 str \0 AFTER". */
++static guchar *
++special_dup (const char *str)
++{
++ GString *buf = g_string_new ("BEFORE");
++ guchar *ret;
++
++ g_string_append_c (buf, '\0');
++ g_string_append (buf, str);
++ g_string_append_c (buf, '\0');
++ g_string_append (buf, "AFTER");
++ ret = (guchar *) g_string_free (buf, FALSE);
++ return ret + strlen ("BEFORE") + 1;
++}
++
++
++/* Free a copy of @str that was made with special_dup(), after asserting
++ * that it has not been corrupted. */
++static void
++special_free (gpointer p)
++{
++ gchar *s = p;
++ gchar *buf = s - strlen ("BEFORE") - 1;
++
++ g_assert_cmpstr (buf, ==, "BEFORE");
++ g_assert_cmpstr (s + strlen (s) + 1, ==, "AFTER");
++ g_free (buf);
++}
++
++
+ static GTlsInteractionResult
+ test_interaction_ask_password_sync_success (GTlsInteraction *interaction,
+ GTlsPassword *password,
+@@ -181,6 +213,8 @@ test_interaction_ask_password_sync_success (GTlsInteraction *interaction,
+ GError **error)
+ {
+ TestInteraction *self;
++ const guchar *value;
++ gsize len;
+
+ g_assert (TEST_IS_INTERACTION (interaction));
+ self = TEST_INTERACTION (interaction);
+@@ -192,6 +226,27 @@ test_interaction_ask_password_sync_success (GTlsInteraction *interaction,
+ g_assert (error != NULL);
+ g_assert (*error == NULL);
+
++ /* Exercise different ways to set the value */
++ g_tls_password_set_value (password, (const guchar *) "foo", 4);
++ len = 0;
++ value = g_tls_password_get_value (password, &len);
++ g_assert_cmpmem (value, len, "foo", 4);
++
++ g_tls_password_set_value (password, (const guchar *) "bar", -1);
++ len = 0;
++ value = g_tls_password_get_value (password, &len);
++ g_assert_cmpmem (value, len, "bar", 3);
++
++ g_tls_password_set_value_full (password, special_dup ("baa"), 4, special_free);
++ len = 0;
++ value = g_tls_password_get_value (password, &len);
++ g_assert_cmpmem (value, len, "baa", 4);
++
++ g_tls_password_set_value_full (password, special_dup ("baz"), -1, special_free);
++ len = 0;
++ value = g_tls_password_get_value (password, &len);
++ g_assert_cmpmem (value, len, "baz", 3);
++
+ /* Don't do this in real life. Include a null terminator for testing */
+ g_tls_password_set_value (password, (const guchar *)"the password", 13);
+ return G_TLS_INTERACTION_HANDLED;
+--
+GitLab
+
new file mode 100644
@@ -0,0 +1,49 @@
+From cb9ee701ef46c1819eed4e2a4dc181682bdfc176 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 10 Feb 2021 21:16:39 +0000
+Subject: [PATCH 1/3] gkeyfilesettingsbackend: Fix basename handling when group
+ is unset
+
+Fix an effective regression in commit
+7781a9cbd2fd0aa84bee0f4eee88470640ff6706, which happens when
+`convert_path()` is called with a `key` which contains no slashes. In
+that case, the `key` is entirely the `basename`.
+
+Prior to commit 7781a9cb, the code worked through a fluke of `i == -1`
+cancelling out with the various additions in the `g_memdup()` call, and
+effectively resulting in `g_strdup (key)`.
+
+Spotted by Guido Berhoerster.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/gkeyfilesettingsbackend.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/gio/gkeyfilesettingsbackend.c b/gio/gkeyfilesettingsbackend.c
+index 25b057672..861c3a661 100644
+--- a/gio/gkeyfilesettingsbackend.c
++++ b/gio/gkeyfilesettingsbackend.c
+@@ -185,7 +185,12 @@ convert_path (GKeyfileSettingsBackend *kfsb,
+ }
+
+ if (basename)
+- *basename = g_memdup2 (last_slash + 1, key_len - (last_slash - key));
++ {
++ if (last_slash != NULL)
++ *basename = g_memdup2 (last_slash + 1, key_len - (last_slash - key));
++ else
++ *basename = g_strdup (key);
++ }
+
+ return TRUE;
+ }
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,43 @@
+From 31e0d403ba635dbbacbfbff74295e5db02558d76 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 10 Feb 2021 21:19:30 +0000
+Subject: [PATCH 2/3] gkeyfilesettingsbackend: Disallow empty key or group
+ names
+
+These should never have been allowed; they will result in precondition
+failures from the `GKeyFile` later on in the code.
+
+A test will be added for this shortly.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/gkeyfilesettingsbackend.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/gio/gkeyfilesettingsbackend.c b/gio/gkeyfilesettingsbackend.c
+index 861c3a661..de216e615 100644
+--- a/gio/gkeyfilesettingsbackend.c
++++ b/gio/gkeyfilesettingsbackend.c
+@@ -158,6 +158,13 @@ convert_path (GKeyfileSettingsBackend *kfsb,
+
+ last_slash = strrchr (key, '/');
+
++ /* Disallow empty group names or key names */
++ if (key_len == 0 ||
++ (last_slash != NULL &&
++ (*(last_slash + 1) == '\0' ||
++ last_slash == key)))
++ return FALSE;
++
+ if (kfsb->root_group)
+ {
+ /* if a root_group was specified, make sure the user hasn't given
+--
+GitLab
+
+
new file mode 100644
@@ -0,0 +1,232 @@
+Backport of:
+
+From 221c26685354dea2b2732df94404e8e5e77a1591 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 10 Feb 2021 21:21:36 +0000
+Subject: [PATCH 3/3] tests: Add tests for key name handling in the keyfile
+ backend
+
+This tests the two recent commits.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-27219
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/tests/gsettings.c | 170 +++++++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 169 insertions(+), 1 deletion(-)
+
+--- a/gio/tests/gsettings.c
++++ b/gio/tests/gsettings.c
+@@ -1,3 +1,4 @@
++#include <errno.h>
+ #include <stdlib.h>
+ #include <locale.h>
+ #include <libintl.h>
+@@ -1740,6 +1741,14 @@ key_changed_cb (GSettings *settings, con
+ (*b) = TRUE;
+ }
+
++typedef struct
++{
++ const gchar *path;
++ const gchar *root_group;
++ const gchar *keyfile_group;
++ const gchar *root_path;
++} KeyfileTestData;
++
+ /*
+ * Test that using a keyfile works
+ */
+@@ -1834,7 +1843,11 @@ test_keyfile (Fixture *fixture,
+ g_free (str);
+
+ g_settings_set (settings, "farewell", "s", "cheerio");
+-
++
++ /* Check that empty keys/groups are not allowed. */
++ g_assert_false (g_settings_is_writable (settings, ""));
++ g_assert_false (g_settings_is_writable (settings, "/"));
++
+ /* When executing as root, changing the mode of the keyfile will have
+ * no effect on the writability of the settings.
+ */
+@@ -1866,6 +1879,149 @@ test_keyfile (Fixture *fixture,
+ g_free (keyfile_path);
+ }
+
++/*
++ * Test that using a keyfile works with a schema with no path set.
++ */
++static void
++test_keyfile_no_path (Fixture *fixture,
++ gconstpointer user_data)
++{
++ const KeyfileTestData *test_data = user_data;
++ GSettingsBackend *kf_backend;
++ GSettings *settings;
++ GKeyFile *keyfile;
++ gboolean writable;
++ gchar *key = NULL;
++ GError *error = NULL;
++ gchar *keyfile_path = NULL, *store_path = NULL;
++
++ keyfile_path = g_build_filename (fixture->tmp_dir, "keyfile", NULL);
++ store_path = g_build_filename (keyfile_path, "gsettings.store", NULL);
++ kf_backend = g_keyfile_settings_backend_new (store_path, test_data->root_path, test_data->root_group);
++ settings = g_settings_new_with_backend_and_path ("org.gtk.test.no-path", kf_backend, test_data->path);
++ g_object_unref (kf_backend);
++
++ g_settings_reset (settings, "test-boolean");
++ g_assert_true (g_settings_get_boolean (settings, "test-boolean"));
++
++ writable = g_settings_is_writable (settings, "test-boolean");
++ g_assert_true (writable);
++ g_settings_set (settings, "test-boolean", "b", FALSE);
++
++ g_assert_false (g_settings_get_boolean (settings, "test-boolean"));
++
++ g_settings_delay (settings);
++ g_settings_set (settings, "test-boolean", "b", TRUE);
++ g_settings_apply (settings);
++
++ keyfile = g_key_file_new ();
++ g_assert_true (g_key_file_load_from_file (keyfile, store_path, 0, NULL));
++
++ g_assert_true (g_key_file_get_boolean (keyfile, test_data->keyfile_group, "test-boolean", NULL));
++
++ g_key_file_free (keyfile);
++
++ g_settings_reset (settings, "test-boolean");
++ g_settings_apply (settings);
++ keyfile = g_key_file_new ();
++ g_assert_true (g_key_file_load_from_file (keyfile, store_path, 0, NULL));
++
++ g_assert_false (g_key_file_get_string (keyfile, test_data->keyfile_group, "test-boolean", &error));
++ g_assert_error (error, G_KEY_FILE_ERROR, G_KEY_FILE_ERROR_KEY_NOT_FOUND);
++ g_clear_error (&error);
++
++ /* Check that empty keys/groups are not allowed. */
++ g_assert_false (g_settings_is_writable (settings, ""));
++ g_assert_false (g_settings_is_writable (settings, "/"));
++
++ /* Keys which ghost the root group name are not allowed. This can only be
++ * tested when the path is `/` as otherwise it acts as a prefix and prevents
++ * any ghosting. */
++ if (g_str_equal (test_data->path, "/"))
++ {
++ key = g_strdup_printf ("%s/%s", test_data->root_group, "");
++ g_assert_false (g_settings_is_writable (settings, key));
++ g_free (key);
++
++ key = g_strdup_printf ("%s/%s", test_data->root_group, "/");
++ g_assert_false (g_settings_is_writable (settings, key));
++ g_free (key);
++
++ key = g_strdup_printf ("%s/%s", test_data->root_group, "test-boolean");
++ g_assert_false (g_settings_is_writable (settings, key));
++ g_free (key);
++ }
++
++ g_key_file_free (keyfile);
++ g_object_unref (settings);
++
++ /* Clean up the temporary directory. */
++ g_assert_cmpint (g_chmod (keyfile_path, 0777) == 0 ? 0 : errno, ==, 0);
++ g_assert_cmpint (g_remove (store_path) == 0 ? 0 : errno, ==, 0);
++ g_assert_cmpint (g_rmdir (keyfile_path) == 0 ? 0 : errno, ==, 0);
++ g_free (store_path);
++ g_free (keyfile_path);
++}
++
++/*
++ * Test that a keyfile rejects writes to keys outside its root path.
++ */
++static void
++test_keyfile_outside_root_path (Fixture *fixture,
++ gconstpointer user_data)
++{
++ GSettingsBackend *kf_backend;
++ GSettings *settings;
++ gchar *keyfile_path = NULL, *store_path = NULL;
++
++ keyfile_path = g_build_filename (fixture->tmp_dir, "keyfile", NULL);
++ store_path = g_build_filename (keyfile_path, "gsettings.store", NULL);
++ kf_backend = g_keyfile_settings_backend_new (store_path, "/tests/basic-types/", "root");
++ settings = g_settings_new_with_backend_and_path ("org.gtk.test.no-path", kf_backend, "/tests/");
++ g_object_unref (kf_backend);
++
++ g_assert_false (g_settings_is_writable (settings, "test-boolean"));
++
++ g_object_unref (settings);
++
++ /* Clean up the temporary directory. The keyfile probably doesn’t exist, so
++ * don’t error on failure. */
++ g_remove (store_path);
++ g_assert_cmpint (g_rmdir (keyfile_path) == 0 ? 0 : errno, ==, 0);
++ g_free (store_path);
++ g_free (keyfile_path);
++}
++
++/*
++ * Test that a keyfile rejects writes to keys in the root if no root group is set.
++ */
++static void
++test_keyfile_no_root_group (Fixture *fixture,
++ gconstpointer user_data)
++{
++ GSettingsBackend *kf_backend;
++ GSettings *settings;
++ gchar *keyfile_path = NULL, *store_path = NULL;
++
++ keyfile_path = g_build_filename (fixture->tmp_dir, "keyfile", NULL);
++ store_path = g_build_filename (keyfile_path, "gsettings.store", NULL);
++ kf_backend = g_keyfile_settings_backend_new (store_path, "/", NULL);
++ settings = g_settings_new_with_backend_and_path ("org.gtk.test.no-path", kf_backend, "/");
++ g_object_unref (kf_backend);
++
++ g_assert_false (g_settings_is_writable (settings, "test-boolean"));
++ g_assert_true (g_settings_is_writable (settings, "child/test-boolean"));
++
++ g_object_unref (settings);
++
++ /* Clean up the temporary directory. The keyfile probably doesn’t exist, so
++ * don’t error on failure. */
++ g_remove (store_path);
++ g_assert_cmpint (g_rmdir (keyfile_path) == 0 ? 0 : errno, ==, 0);
++ g_free (store_path);
++ g_free (keyfile_path);
++}
++
+ /* Test that getting child schemas works
+ */
+ static void
+@@ -2844,6 +3000,14 @@ main (int argc, char *argv[])
+ gchar *override_text;
+ gchar *enums;
+ gint result;
++ const KeyfileTestData keyfile_test_data_explicit_path = { "/tests/", "root", "tests", "/" };
++ const KeyfileTestData keyfile_test_data_empty_path = { "/", "root", "root", "/" };
++ const KeyfileTestData keyfile_test_data_long_path = {
++ "/tests/path/is/very/long/and/this/makes/some/comparisons/take/a/different/branch/",
++ "root",
++ "tests/path/is/very/long/and/this/makes/some/comparisons/take/a/different/branch",
++ "/"
++ };
+
+ /* Meson build sets this */
+ #ifdef TEST_LOCALE_PATH
+@@ -2967,6 +3131,11 @@ main (int argc, char *argv[])
+ }
+
+ g_test_add ("/gsettings/keyfile", Fixture, NULL, setup, test_keyfile, teardown);
++ g_test_add ("/gsettings/keyfile/explicit-path", Fixture, &keyfile_test_data_explicit_path, setup, test_keyfile_no_path, teardown);
++ g_test_add ("/gsettings/keyfile/empty-path", Fixture, &keyfile_test_data_empty_path, setup, test_keyfile_no_path, teardown);
++ g_test_add ("/gsettings/keyfile/long-path", Fixture, &keyfile_test_data_long_path, setup, test_keyfile_no_path, teardown);
++ g_test_add ("/gsettings/keyfile/outside-root-path", Fixture, NULL, setup, test_keyfile_outside_root_path, teardown);
++ g_test_add ("/gsettings/keyfile/no-root-group", Fixture, NULL, setup, test_keyfile_no_root_group, teardown);
+ g_test_add_func ("/gsettings/child-schema", test_child_schema);
+ g_test_add_func ("/gsettings/strinfo", test_strinfo);
+ g_test_add_func ("/gsettings/enums", test_enums);
new file mode 100644
@@ -0,0 +1,27 @@
+From 78420a75aeb70569a8cd79fa0fea7b786b6f785f Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 24 Feb 2021 17:33:38 +0000
+Subject: [PATCH 1/5] glocalfileoutputstream: Fix a typo in a comment
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-28153
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/glocalfileoutputstream.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/gio/glocalfileoutputstream.c
++++ b/gio/glocalfileoutputstream.c
+@@ -851,7 +851,7 @@ handle_overwrite_open (const char *fi
+ mode = mode_from_flags_or_info (flags, reference_info);
+
+ /* We only need read access to the original file if we are creating a backup.
+- * We also add O_CREATE to avoid a race if the file was just removed */
++ * We also add O_CREAT to avoid a race if the file was just removed */
+ if (create_backup || readable)
+ open_flags = O_RDWR | O_CREAT | O_BINARY;
+ else
new file mode 100644
@@ -0,0 +1,42 @@
+From 32d3d02a50e7dcec5f4cf7908e7ac88d575d8fc5 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 24 Feb 2021 17:34:32 +0000
+Subject: [PATCH 2/5] tests: Stop using g_test_bug_base() in file tests
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Since a following commit is going to add a new test which references
+Gitlab, so it’s best to move the URI bases inside the test cases.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-28153
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/tests/file.c | 4 +---
+ 1 file changed, 1 insertion(+), 3 deletions(-)
+
+--- a/gio/tests/file.c
++++ b/gio/tests/file.c
+@@ -685,7 +685,7 @@ test_replace_cancel (void)
+ guint count;
+ GError *error = NULL;
+
+- g_test_bug ("629301");
++ g_test_bug ("https://bugzilla.gnome.org/629301");
+
+ path = g_dir_make_tmp ("g_file_replace_cancel_XXXXXX", &error);
+ g_assert_no_error (error);
+@@ -1784,8 +1784,6 @@ main (int argc, char *argv[])
+ {
+ g_test_init (&argc, &argv, NULL);
+
+- g_test_bug_base ("http://bugzilla.gnome.org/");
+-
+ g_test_add_func ("/file/basic", test_basic);
+ g_test_add_func ("/file/build-filename", test_build_filename);
+ g_test_add_func ("/file/parent", test_parent);
new file mode 100644
@@ -0,0 +1,57 @@
+Backport of:
+
+From ce0eb088a68171eed3ac217cb92a72e36eb57d1b Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 10 Mar 2021 16:05:55 +0000
+Subject: [PATCH 3/5] glocalfileoutputstream: Factor out a flag check
+
+This clarifies the code a little. It introduces no functional changes.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-28153
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/glocalfileoutputstream.c | 7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+--- a/gio/glocalfileoutputstream.c
++++ b/gio/glocalfileoutputstream.c
+@@ -847,6 +847,7 @@ handle_overwrite_open (const char *fi
+ int res;
+ int mode;
+ int errsv;
++ gboolean replace_destination_set = (flags & G_FILE_CREATE_REPLACE_DESTINATION);
+
+ mode = mode_from_flags_or_info (flags, reference_info);
+
+@@ -954,7 +955,7 @@ handle_overwrite_open (const char *fi
+ * to a backup file and rewrite the contents of the file.
+ */
+
+- if ((flags & G_FILE_CREATE_REPLACE_DESTINATION) ||
++ if (replace_destination_set ||
+ (!(original_stat.st_nlink > 1) && !is_symlink))
+ {
+ char *dirname, *tmp_filename;
+@@ -973,7 +974,7 @@ handle_overwrite_open (const char *fi
+
+ /* try to keep permissions (unless replacing) */
+
+- if ( ! (flags & G_FILE_CREATE_REPLACE_DESTINATION) &&
++ if (!replace_destination_set &&
+ (
+ #ifdef HAVE_FCHOWN
+ fchown (tmpfd, original_stat.st_uid, original_stat.st_gid) == -1 ||
+@@ -1112,7 +1113,7 @@ handle_overwrite_open (const char *fi
+ }
+ }
+
+- if (flags & G_FILE_CREATE_REPLACE_DESTINATION)
++ if (replace_destination_set)
+ {
+ g_close (fd, NULL);
+
new file mode 100644
@@ -0,0 +1,265 @@
+Backport of:
+
+From 317b3b587058a05dca95d56dac26568c5b098d33 Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 24 Feb 2021 17:36:07 +0000
+Subject: [PATCH 4/5] glocalfileoutputstream: Fix CREATE_REPLACE_DESTINATION
+ with symlinks
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The `G_FILE_CREATE_REPLACE_DESTINATION` flag is equivalent to unlinking
+the destination file and re-creating it from scratch. That did
+previously work, but in the process the code would call `open(O_CREAT)`
+on the file. If the file was a dangling symlink, this would create the
+destination file (empty). That’s not an intended side-effect, and has
+security implications if the symlink is controlled by a lower-privileged
+process.
+
+Fix that by not opening the destination file if it’s a symlink, and
+adjusting the rest of the code to cope with
+ - the fact that `fd == -1` is not an error iff `is_symlink` is true,
+ - and that `original_stat` will contain the `lstat()` results for the
+ symlink now, rather than the `stat()` results for its target (again,
+ iff `is_symlink` is true).
+
+This means that the target of the dangling symlink is no longer created,
+which was the bug. The symlink itself continues to be replaced (as
+before) with the new file — this is the intended behaviour of
+`g_file_replace()`.
+
+The behaviour for non-symlink cases, or cases where the symlink was not
+dangling, should be unchanged.
+
+Includes a unit test.
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Fixes: #2325
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-28153
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/glocalfileoutputstream.c | 77 ++++++++++++++++++-------
+ gio/tests/file.c | 108 +++++++++++++++++++++++++++++++++++
+ 2 files changed, 163 insertions(+), 22 deletions(-)
+
+--- a/gio/glocalfileoutputstream.c
++++ b/gio/glocalfileoutputstream.c
+@@ -875,16 +875,22 @@ handle_overwrite_open (const char *fi
+ /* Could be a symlink, or it could be a regular ELOOP error,
+ * but then the next open will fail too. */
+ is_symlink = TRUE;
+- fd = g_open (filename, open_flags, mode);
++ if (!replace_destination_set)
++ fd = g_open (filename, open_flags, mode);
+ }
+-#else
+- fd = g_open (filename, open_flags, mode);
+- errsv = errno;
++#else /* if !O_NOFOLLOW */
+ /* This is racy, but we do it as soon as possible to minimize the race */
+ is_symlink = g_file_test (filename, G_FILE_TEST_IS_SYMLINK);
++
++ if (!is_symlink || !replace_destination_set)
++ {
++ fd = g_open (filename, open_flags, mode);
++ errsv = errno;
++ }
+ #endif
+
+- if (fd == -1)
++ if (fd == -1 &&
++ (!is_symlink || !replace_destination_set))
+ {
+ char *display_name = g_filename_display_name (filename);
+ g_set_error (error, G_IO_ERROR,
+@@ -898,7 +904,14 @@ handle_overwrite_open (const char *fi
+ #ifdef G_OS_WIN32
+ res = GLIB_PRIVATE_CALL (g_win32_fstat) (fd, &original_stat);
+ #else
+- res = fstat (fd, &original_stat);
++ if (!is_symlink)
++ {
++ res = fstat (fd, &original_stat);
++ }
++ else
++ {
++ res = lstat (filename, &original_stat);
++ }
+ #endif
+ errsv = errno;
+
+@@ -917,16 +930,27 @@ handle_overwrite_open (const char *fi
+ if (!S_ISREG (original_stat.st_mode))
+ {
+ if (S_ISDIR (original_stat.st_mode))
+- g_set_error_literal (error,
+- G_IO_ERROR,
+- G_IO_ERROR_IS_DIRECTORY,
+- _("Target file is a directory"));
+- else
+- g_set_error_literal (error,
++ {
++ g_set_error_literal (error,
++ G_IO_ERROR,
++ G_IO_ERROR_IS_DIRECTORY,
++ _("Target file is a directory"));
++ goto err_out;
++ }
++ else if (!is_symlink ||
++#ifdef S_ISLNK
++ !S_ISLNK (original_stat.st_mode)
++#else
++ FALSE
++#endif
++ )
++ {
++ g_set_error_literal (error,
+ G_IO_ERROR,
+ G_IO_ERROR_NOT_REGULAR_FILE,
+ _("Target file is not a regular file"));
+- goto err_out;
++ goto err_out;
++ }
+ }
+
+ if (etag != NULL)
+@@ -1007,7 +1031,8 @@ handle_overwrite_open (const char *fi
+ }
+ }
+
+- g_close (fd, NULL);
++ if (fd >= 0)
++ g_close (fd, NULL);
+ *temp_filename = tmp_filename;
+ return tmpfd;
+ }
+--- a/gio/tests/file.c
++++ b/gio/tests/file.c
+@@ -804,6 +804,113 @@ test_replace_cancel (void)
+ g_object_unref (tmpdir);
+ }
+
++static void
++test_replace_symlink (void)
++{
++#ifdef G_OS_UNIX
++ gchar *tmpdir_path = NULL;
++ GFile *tmpdir = NULL, *source_file = NULL, *target_file = NULL;
++ GFileOutputStream *stream = NULL;
++ const gchar *new_contents = "this is a test message which should be written to source and not target";
++ gsize n_written;
++ GFileEnumerator *enumerator = NULL;
++ GFileInfo *info = NULL;
++ gchar *contents = NULL;
++ gsize length = 0;
++ GError *local_error = NULL;
++
++ g_test_bug ("https://gitlab.gnome.org/GNOME/glib/-/issues/2325");
++ g_test_summary ("Test that G_FILE_CREATE_REPLACE_DESTINATION doesn’t follow symlinks");
++
++ /* Create a fresh, empty working directory. */
++ tmpdir_path = g_dir_make_tmp ("g_file_replace_symlink_XXXXXX", &local_error);
++ g_assert_no_error (local_error);
++ tmpdir = g_file_new_for_path (tmpdir_path);
++
++ g_test_message ("Using temporary directory %s", tmpdir_path);
++ g_free (tmpdir_path);
++
++ /* Create symlink `source` which points to `target`. */
++ source_file = g_file_get_child (tmpdir, "source");
++ target_file = g_file_get_child (tmpdir, "target");
++ g_file_make_symbolic_link (source_file, "target", NULL, &local_error);
++ g_assert_no_error (local_error);
++
++ /* Ensure that `target` doesn’t exist */
++ g_assert_false (g_file_query_exists (target_file, NULL));
++
++ /* Replace the `source` symlink with a regular file using
++ * %G_FILE_CREATE_REPLACE_DESTINATION, which should replace it *without*
++ * following the symlink */
++ stream = g_file_replace (source_file, NULL, FALSE /* no backup */,
++ G_FILE_CREATE_REPLACE_DESTINATION, NULL, &local_error);
++ g_assert_no_error (local_error);
++
++ g_output_stream_write_all (G_OUTPUT_STREAM (stream), new_contents, strlen (new_contents),
++ &n_written, NULL, &local_error);
++ g_assert_no_error (local_error);
++ g_assert_cmpint (n_written, ==, strlen (new_contents));
++
++ g_output_stream_close (G_OUTPUT_STREAM (stream), NULL, &local_error);
++ g_assert_no_error (local_error);
++
++ g_clear_object (&stream);
++
++ /* At this point, there should still only be one file: `source`. It should
++ * now be a regular file. `target` should not exist. */
++ enumerator = g_file_enumerate_children (tmpdir,
++ G_FILE_ATTRIBUTE_STANDARD_NAME ","
++ G_FILE_ATTRIBUTE_STANDARD_TYPE,
++ G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL, &local_error);
++ g_assert_no_error (local_error);
++
++ info = g_file_enumerator_next_file (enumerator, NULL, &local_error);
++ g_assert_no_error (local_error);
++ g_assert_nonnull (info);
++
++ g_assert_cmpstr (g_file_info_get_name (info), ==, "source");
++ g_assert_cmpint (g_file_info_get_file_type (info), ==, G_FILE_TYPE_REGULAR);
++
++ g_clear_object (&info);
++
++ info = g_file_enumerator_next_file (enumerator, NULL, &local_error);
++ g_assert_no_error (local_error);
++ g_assert_null (info);
++
++ g_file_enumerator_close (enumerator, NULL, &local_error);
++ g_assert_no_error (local_error);
++ g_clear_object (&enumerator);
++
++ /* Double-check that `target` doesn’t exist */
++ g_assert_false (g_file_query_exists (target_file, NULL));
++
++ /* Check the content of `source`. */
++ g_file_load_contents (source_file,
++ NULL,
++ &contents,
++ &length,
++ NULL,
++ &local_error);
++ g_assert_no_error (local_error);
++ g_assert_cmpstr (contents, ==, new_contents);
++ g_assert_cmpuint (length, ==, strlen (new_contents));
++ g_free (contents);
++
++ /* Tidy up. */
++ g_file_delete (source_file, NULL, &local_error);
++ g_assert_no_error (local_error);
++
++ g_file_delete (tmpdir, NULL, &local_error);
++ g_assert_no_error (local_error);
++
++ g_clear_object (&target_file);
++ g_clear_object (&source_file);
++ g_clear_object (&tmpdir);
++#else /* if !G_OS_UNIX */
++ g_test_skip ("Symlink replacement tests can only be run on Unix")
++#endif
++}
++
+ static void
+ on_file_deleted (GObject *object,
+ GAsyncResult *result,
+@@ -1752,6 +1859,7 @@ main (int argc, char *argv[])
+ g_test_add_data_func ("/file/async-create-delete/4096", GINT_TO_POINTER (4096), test_create_delete);
+ g_test_add_func ("/file/replace-load", test_replace_load);
+ g_test_add_func ("/file/replace-cancel", test_replace_cancel);
++ g_test_add_func ("/file/replace-symlink", test_replace_symlink);
+ g_test_add_func ("/file/async-delete", test_async_delete);
+ #ifdef G_OS_UNIX
+ g_test_add_func ("/file/copy-preserve-mode", test_copy_preserve_mode);
new file mode 100644
@@ -0,0 +1,55 @@
+From 6c6439261bc7a8a0627519848a7222b3e1bd4ffe Mon Sep 17 00:00:00 2001
+From: Philip Withnall <pwithnall@endlessos.org>
+Date: Wed, 24 Feb 2021 17:42:24 +0000
+Subject: [PATCH 5/5] glocalfileoutputstream: Add a missing O_CLOEXEC flag to
+ replace()
+
+Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
+
+Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz]
+CVE: CVE-2021-28153
+Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com>
+Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com>
+
+---
+ gio/glocalfileoutputstream.c | 15 ++++++++++++---
+ 1 file changed, 12 insertions(+), 3 deletions(-)
+
+--- a/gio/glocalfileoutputstream.c
++++ b/gio/glocalfileoutputstream.c
+@@ -58,6 +58,12 @@
+ #define O_BINARY 0
+ #endif
+
++#ifndef O_CLOEXEC
++#define O_CLOEXEC 0
++#else
++#define HAVE_O_CLOEXEC 1
++#endif
++
+ struct _GLocalFileOutputStreamPrivate {
+ char *tmp_filename;
+ char *original_filename;
+@@ -1223,7 +1229,7 @@ _g_local_file_output_stream_replace (con
+ sync_on_close = FALSE;
+
+ /* If the file doesn't exist, create it */
+- open_flags = O_CREAT | O_EXCL | O_BINARY;
++ open_flags = O_CREAT | O_EXCL | O_BINARY | O_CLOEXEC;
+ if (readable)
+ open_flags |= O_RDWR;
+ else
+@@ -1253,8 +1259,11 @@ _g_local_file_output_stream_replace (con
+ set_error_from_open_errno (filename, error);
+ return NULL;
+ }
+-
+-
++#if !defined(HAVE_O_CLOEXEC) && defined(F_SETFD)
++ else
++ fcntl (fd, F_SETFD, FD_CLOEXEC);
++#endif
++
+ stream = g_object_new (G_TYPE_LOCAL_FILE_OUTPUT_STREAM, NULL);
+ stream->priv->fd = fd;
+ stream->priv->sync_on_close = sync_on_close;
@@ -18,6 +18,30 @@ SRC_URI = "${GNOME_MIRROR}/glib/${SHRT_VER}/glib-${PV}.tar.xz \
file://0001-gio-tests-resources.c-comment-out-a-build-host-only-.patch \
file://tzdata-update.patch \
file://CVE-2020-35457.patch \
+ file://CVE-2021-27218.patch \
+ file://CVE-2021-27219-01.patch \
+ file://CVE-2021-27219-02.patch \
+ file://CVE-2021-27219-03.patch \
+ file://CVE-2021-27219-04.patch \
+ file://CVE-2021-27219-05.patch \
+ file://CVE-2021-27219-06.patch \
+ file://CVE-2021-27219-07.patch \
+ file://CVE-2021-27219-08.patch \
+ file://CVE-2021-27219-09.patch \
+ file://CVE-2021-27219-10.patch \
+ file://CVE-2021-27219-11.patch \
+ file://CVE-2021-27219-reg1-1.patch \
+ file://CVE-2021-27219-reg1-2.patch \
+ file://CVE-2021-27219-reg1-4.patch \
+ file://CVE-2021-27219-reg1-5.patch \
+ file://CVE-2021-27219-reg2-1.patch \
+ file://CVE-2021-27219-reg2-2.patch \
+ file://CVE-2021-27219-reg2-3.patch \
+ file://CVE-2021-28153-1.patch \
+ file://CVE-2021-28153-2.patch \
+ file://CVE-2021-28153-3.patch \
+ file://CVE-2021-28153-4.patch \
+ file://CVE-2021-28153-5.patch \
"
SRC_URI_append_class-native = " file://relocate-modules.patch"