new file mode 100644
@@ -0,0 +1,237 @@
+From d8cfbc808f387e87091c25e7d5b8c2bb348bb206 Mon Sep 17 00:00:00 2001
+From: Jean Delvare <jdelvare@suse.de>
+Date: Tue, 27 Jun 2023 09:40:23 +0000
+Subject: [PATCH] dmidecode: Write the whole dump file at once
+
+When option --dump-bin is used, write the whole dump file at once,
+instead of opening and closing the file separately for the table
+and then for the entry point.
+
+As the file writing function is no longer generic, it gets moved
+from util.c to dmidecode.c.
+
+One minor functional change resulting from the new implementation is
+that the entry point is written first now, so the messages printed
+are swapped.
+
+Signed-off-by: Jean Delvare <jdelvare@suse.de>
+Reviewed-by: Jerry Hoemann <jerry.hoemann@hpe.com>
+
+CVE: CVE-2023-30630
+
+Reference: https://github.com/mirror/dmidecode/commit/39b2dd7b6ab719b920e96ed832cfb4bdd664e808
+
+Upstream-Status: Backport [https://github.com/mirror/dmidecode/commit/d8cfbc808f387e87091c25e7d5b8c2bb348bb206]
+
+Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
+---
+ dmidecode.c | 79 +++++++++++++++++++++++++++++++++++++++--------------
+ util.c | 40 ---------------------------
+ util.h | 1 -
+ 3 files changed, 58 insertions(+), 62 deletions(-)
+
+diff --git a/dmidecode.c b/dmidecode.c
+index 9aeff91..5477309 100644
+--- a/dmidecode.c
++++ b/dmidecode.c
+@@ -5427,11 +5427,56 @@ static void dmi_table_string(const struct dmi_header *h, const u8 *data, u16 ver
+ }
+ }
+
+-static void dmi_table_dump(const u8 *buf, u32 len)
++static int dmi_table_dump(const u8 *ep, u32 ep_len, const u8 *table,
++ u32 table_len)
+ {
++ FILE *f;
++
++ f = fopen(opt.dumpfile, "wb");
++ if (!f)
++ {
++ fprintf(stderr, "%s: ", opt.dumpfile);
++ perror("fopen");
++ return -1;
++ }
++
++ if (!(opt.flags & FLAG_QUIET))
++ pr_comment("Writing %d bytes to %s.", ep_len, opt.dumpfile);
++ if (fwrite(ep, ep_len, 1, f) != 1)
++ {
++ fprintf(stderr, "%s: ", opt.dumpfile);
++ perror("fwrite");
++ goto err_close;
++ }
++
++ if (fseek(f, 32, SEEK_SET) != 0)
++ {
++ fprintf(stderr, "%s: ", opt.dumpfile);
++ perror("fseek");
++ goto err_close;
++ }
++
+ if (!(opt.flags & FLAG_QUIET))
+- pr_comment("Writing %d bytes to %s.", len, opt.dumpfile);
+- write_dump(32, len, buf, opt.dumpfile, 0);
++ pr_comment("Writing %d bytes to %s.", table_len, opt.dumpfile);
++ if (fwrite(table, table_len, 1, f) != 1)
++ {
++ fprintf(stderr, "%s: ", opt.dumpfile);
++ perror("fwrite");
++ goto err_close;
++ }
++
++ if (fclose(f))
++ {
++ fprintf(stderr, "%s: ", opt.dumpfile);
++ perror("fclose");
++ return -1;
++ }
++
++ return 0;
++
++err_close:
++ fclose(f);
++ return -1;
+ }
+
+ static void dmi_table_decode(u8 *buf, u32 len, u16 num, u16 ver, u32 flags)
+@@ -5648,11 +5693,6 @@ static void dmi_table(off_t base, u32 len, u16 num, u32 ver, const char *devmem,
+ return;
+ }
+
+- if (opt.flags & FLAG_DUMP_BIN)
+- dmi_table_dump(buf, len);
+- else
+- dmi_table_decode(buf, len, num, ver >> 8, flags);
+-
+ free(buf);
+ }
+
+@@ -5688,8 +5728,9 @@ static void overwrite_smbios3_address(u8 *buf)
+
+ static int smbios3_decode(u8 *buf, const char *devmem, u32 flags)
+ {
+- u32 ver;
++ u32 ver, len;
+ u64 offset;
++ u8 *table;
+
+ /* Don't let checksum run beyond the buffer */
+ if (buf[0x06] > 0x20)
+@@ -5725,10 +5766,7 @@ static int smbios3_decode(u8 *buf, const char *devmem, u32 flags)
+ memcpy(crafted, buf, 32);
+ overwrite_smbios3_address(crafted);
+
+- if (!(opt.flags & FLAG_QUIET))
+- pr_comment("Writing %d bytes to %s.", crafted[0x06],
+- opt.dumpfile);
+- write_dump(0, crafted[0x06], crafted, opt.dumpfile, 1);
++ dmi_table_dump(crafted, crafted[0x06], table, len);
+ }
+
+ return 1;
+@@ -5737,6 +5775,8 @@ static int smbios3_decode(u8 *buf, const char *devmem, u32 flags)
+ static int smbios_decode(u8 *buf, const char *devmem, u32 flags)
+ {
+ u16 ver;
++ u32 len;
++ u8 *table;
+
+ /* Don't let checksum run beyond the buffer */
+ if (buf[0x05] > 0x20)
+@@ -5786,10 +5826,7 @@ static int smbios_decode(u8 *buf, const char *devmem, u32 flags)
+ memcpy(crafted, buf, 32);
+ overwrite_dmi_address(crafted + 0x10);
+
+- if (!(opt.flags & FLAG_QUIET))
+- pr_comment("Writing %d bytes to %s.", crafted[0x05],
+- opt.dumpfile);
+- write_dump(0, crafted[0x05], crafted, opt.dumpfile, 1);
++ dmi_table_dump(crafted, crafted[0x05], table, len);
+ }
+
+ return 1;
+@@ -5797,6 +5834,9 @@ static int smbios_decode(u8 *buf, const char *devmem, u32 flags)
+
+ static int legacy_decode(u8 *buf, const char *devmem, u32 flags)
+ {
++ u32 len;
++ u8 *table;
++
+ if (!checksum(buf, 0x0F))
+ return 0;
+
+@@ -5815,10 +5855,7 @@ static int legacy_decode(u8 *buf, const char *devmem, u32 flags)
+ memcpy(crafted, buf, 16);
+ overwrite_dmi_address(crafted);
+
+- if (!(opt.flags & FLAG_QUIET))
+- pr_comment("Writing %d bytes to %s.", 0x0F,
+- opt.dumpfile);
+- write_dump(0, 0x0F, crafted, opt.dumpfile, 1);
++ dmi_table_dump(crafted, 0x0F, table, len);
+ }
+
+ return 1;
+diff --git a/util.c b/util.c
+index 04aaadd..1547096 100644
+--- a/util.c
++++ b/util.c
+@@ -259,46 +259,6 @@ out:
+ return p;
+ }
+
+-int write_dump(size_t base, size_t len, const void *data, const char *dumpfile, int add)
+-{
+- FILE *f;
+-
+- f = fopen(dumpfile, add ? "r+b" : "wb");
+- if (!f)
+- {
+- fprintf(stderr, "%s: ", dumpfile);
+- perror("fopen");
+- return -1;
+- }
+-
+- if (fseek(f, base, SEEK_SET) != 0)
+- {
+- fprintf(stderr, "%s: ", dumpfile);
+- perror("fseek");
+- goto err_close;
+- }
+-
+- if (fwrite(data, len, 1, f) != 1)
+- {
+- fprintf(stderr, "%s: ", dumpfile);
+- perror("fwrite");
+- goto err_close;
+- }
+-
+- if (fclose(f))
+- {
+- fprintf(stderr, "%s: ", dumpfile);
+- perror("fclose");
+- return -1;
+- }
+-
+- return 0;
+-
+-err_close:
+- fclose(f);
+- return -1;
+-}
+-
+ /* Returns end - start + 1, assuming start < end */
+ u64 u64_range(u64 start, u64 end)
+ {
+diff --git a/util.h b/util.h
+index 3094cf8..ef24eb9 100644
+--- a/util.h
++++ b/util.h
+@@ -27,5 +27,4 @@
+ int checksum(const u8 *buf, size_t len);
+ void *read_file(off_t base, size_t *len, const char *filename);
+ void *mem_chunk(off_t base, size_t len, const char *devmem);
+-int write_dump(size_t base, size_t len, const void *data, const char *dumpfile, int add);
+ u64 u64_range(u64 start, u64 end);
+--
+2.35.5
new file mode 100644
@@ -0,0 +1,80 @@
+From 47101389dd52b50123a3ec59fed4d2021752e489 Mon Sep 17 00:00:00 2001
+From: Jean Delvare <jdelvare@suse.de>
+Date: Tue, 27 Jun 2023 10:03:53 +0000
+Subject: [PATCH] dmidecode: Do not let --dump-bin overwrite an existing file
+
+Make sure that the file passed to option --dump-bin does not already
+exist. In practice, it is rather unlikely that an honest user would
+want to overwrite an existing dump file, while this possibility
+could be used by a rogue user to corrupt a system file.
+
+Signed-off-by: Jean Delvare <jdelvare@suse.de>
+Reviewed-by: Jerry Hoemann <jerry.hoemann@hpe.com>
+
+CVE: CVE-2023-30630
+
+Upstream-Status: Backport
+[https://github.com/mirror/dmidecode/commit/6ca381c1247c81f74e1ca4e7706f70bdda72e6f2]
+
+Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
+
+---
+ dmidecode.c | 14 ++++++++++++--
+ man/dmidecode.8 | 3 ++-
+ 2 files changed, 14 insertions(+), 3 deletions(-)
+
+diff --git a/dmidecode.c b/dmidecode.c
+index ae461de..6446040 100644
+--- a/dmidecode.c
++++ b/dmidecode.c
+@@ -60,6 +60,7 @@
+ * https://www.dmtf.org/sites/default/files/DSP0270_1.0.1.pdf
+ */
+
++#include <fcntl.h>
+ #include <stdio.h>
+ #include <string.h>
+ #include <strings.h>
+@@ -5133,13 +5134,22 @@ static void dmi_table_string(const struct dmi_header *h, const u8 *data, u16 ver
+ static int dmi_table_dump(const u8 *ep, u32 ep_len, const u8 *table,
+ u32 table_len)
+ {
++ int fd;
+ FILE *f;
+
+- f = fopen(opt.dumpfile, "wb");
++ fd = open(opt.dumpfile, O_WRONLY|O_CREAT|O_EXCL, 0666);
++ if (fd == -1)
++ {
++ fprintf(stderr, "%s: ", opt.dumpfile);
++ perror("open");
++ return -1;
++ }
++
++ f = fdopen(fd, "wb");
+ if (!f)
+ {
+ fprintf(stderr, "%s: ", opt.dumpfile);
+- perror("fopen");
++ perror("fdopen");
+ return -1;
+ }
+
+diff --git a/man/dmidecode.8 b/man/dmidecode.8
+index 64dc7e7..d5b7f01 100644
+--- a/man/dmidecode.8
++++ b/man/dmidecode.8
+@@ -1,4 +1,4 @@
+-.TH DMIDECODE 8 "January 2019" "dmidecode"
++.TH DMIDECODE 8 "February 2023" "dmidecode"
+ .\"
+ .SH NAME
+ dmidecode \- \s-1DMI\s0 table decoder
+@@ -132,6 +132,7 @@ hexadecimal and \s-1ASCII\s0. This option is mainly useful for debugging.
+ Do not decode the entries, instead dump the DMI data to a file in binary
+ form. The generated file is suitable to pass to \fB--from-dump\fR
+ later.
++\fIFILE\fP must not exist.
+ .TP
+ .BR " " " " "--from-dump FILE"
+ Read the DMI data from a binary file previously generated using
new file mode 100644
@@ -0,0 +1,69 @@
+From c76ddda0ba0aa99a55945e3290095c2ec493c892 Mon Sep 17 00:00:00 2001
+From: Jean Delvare <jdelvare@suse.de>
+Date: Tue, 27 Jun 2023 10:25:50 +0000
+Subject: [PATCH] Consistently use read_file() when reading from a dump file
+
+Use read_file() instead of mem_chunk() to read the entry point from a
+dump file. This is faster, and consistent with how we then read the
+actual DMI table from that dump file.
+
+This made no functional difference so far, which is why it went
+unnoticed for years. But now that a file type check was added to the
+mem_chunk() function, we must stop using it to read from regular
+files.
+
+This will again allow root to use the --from-dump option.
+
+Signed-off-by: Jean Delvare <jdelvare@suse.de>
+Tested-by: Jerry Hoemann <jerry.hoemann@hpe.com>
+
+CVE: CVE-2023-30630
+
+Upstream-Status: Backport [https://git.savannah.nongnu.org/cgit/dmidecode.git/commit/?id=c76ddda0ba0aa99a55945e3290095c2ec493c892]
+
+Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
+---
+ dmidecode.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/dmidecode.c b/dmidecode.c
+index 98f9692..b4dbc9d 100644
+--- a/dmidecode.c
++++ b/dmidecode.c
+@@ -5997,17 +5997,25 @@ int main(int argc, char * const argv[])
+ pr_comment("dmidecode %s", VERSION);
+
+ /* Read from dump if so instructed */
++ size = 0x20;
+ if (opt.flags & FLAG_FROM_DUMP)
+ {
+ if (!(opt.flags & FLAG_QUIET))
+ pr_info("Reading SMBIOS/DMI data from file %s.",
+ opt.dumpfile);
+- if ((buf = mem_chunk(0, 0x20, opt.dumpfile)) == NULL)
++ if ((buf = read_file(0, &size, opt.dumpfile)) == NULL)
+ {
+ ret = 1;
+ goto exit_free;
+ }
+
++ /* Truncated entry point can't be processed */
++ if (size < 0x20)
++ {
++ ret = 1;
++ goto done;
++ }
++
+ if (memcmp(buf, "_SM3_", 5) == 0)
+ {
+ if (smbios3_decode(buf, opt.dumpfile, 0))
+@@ -6031,7 +6039,6 @@ int main(int argc, char * const argv[])
+ * contain one of several types of entry points, so read enough for
+ * the largest one, then determine what type it contains.
+ */
+- size = 0x20;
+ if (!(opt.flags & FLAG_NO_SYSFS)
+ && (buf = read_file(0, &size, SYS_ENTRY_FILE)) != NULL)
+ {
+--
+2.40.0
new file mode 100644
@@ -0,0 +1,137 @@
+From 2b83c4b898f8325313162f588765411e8e3e5561 Mon Sep 17 00:00:00 2001
+From: Jean Delvare <jdelvare@suse.de>
+Date: Tue, 27 Jun 2023 10:58:11 +0000
+Subject: [PATCH] Don't read beyond sysfs entry point buffer
+
+Functions smbios_decode() and smbios3_decode() include a check
+against buffer overrun. This check assumes that the buffer length is
+always 32 bytes. This is true when reading from /dev/mem or from a
+dump file, however when reading from sysfs, the buffer length is the
+size of the actual sysfs attribute file, typically 31 bytes for an
+SMBIOS 2.x entry point and 24 bytes for an SMBIOS 3.x entry point.
+
+In the unlikely event of a malformed entry point, with encoded length
+larger than expected but smaller than or equal to 32, we would hit a
+buffer overrun. So properly pass the actual buffer length as an
+argument and perform the check against it.
+
+In practice, this will never happen, because on the Linux kernel
+side, the size of the sysfs attribute file is decided from the entry
+point length field. So it is technically impossible for them not to
+match. But user-space code should not make such assumptions.
+
+Signed-off-by: Jean Delvare <jdelvare@suse.de>
+
+CVE: CVE-2023-30630
+
+Upstream-Status: Backport
+[https://git.savannah.nongnu.org/cgit/dmidecode.git/commit/?id=2b83c4b898f8325313162f588765411e8e3e5561]
+
+Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
+---
+ dmidecode.c | 24 ++++++++++++------------
+ 1 file changed, 12 insertions(+), 12 deletions(-)
+
+diff --git a/dmidecode.c b/dmidecode.c
+index b4dbc9d..870d94e 100644
+--- a/dmidecode.c
++++ b/dmidecode.c
+@@ -5736,14 +5736,14 @@ static void overwrite_smbios3_address(u8 *buf)
+ buf[0x17] = 0;
+ }
+
+-static int smbios3_decode(u8 *buf, const char *devmem, u32 flags)
++static int smbios3_decode(u8 *buf, size_t buf_len, const char *devmem, u32 flags)
+ {
+ u32 ver, len;
+ u64 offset;
+ u8 *table;
+
+ /* Don't let checksum run beyond the buffer */
+- if (buf[0x06] > 0x20)
++ if (buf[0x06] > buf_len)
+ {
+ fprintf(stderr,
+ "Entry point length too large (%u bytes, expected %u).\n",
+@@ -5782,14 +5782,14 @@ static int smbios3_decode(u8 *buf, const char *devmem, u32 flags)
+ return 1;
+ }
+
+-static int smbios_decode(u8 *buf, const char *devmem, u32 flags)
++static int smbios_decode(u8 *buf, size_t buf_len, const char *devmem, u32 flags)
+ {
+ u16 ver;
+ u32 len;
+ u8 *table;
+
+ /* Don't let checksum run beyond the buffer */
+- if (buf[0x05] > 0x20)
++ if (buf[0x05] > buf_len)
+ {
+ fprintf(stderr,
+ "Entry point length too large (%u bytes, expected %u).\n",
+@@ -6018,12 +6018,12 @@ int main(int argc, char * const argv[])
+
+ if (memcmp(buf, "_SM3_", 5) == 0)
+ {
+- if (smbios3_decode(buf, opt.dumpfile, 0))
++ if (smbios3_decode(buf, size, opt.dumpfile, 0))
+ found++;
+ }
+ else if (memcmp(buf, "_SM_", 4) == 0)
+ {
+- if (smbios_decode(buf, opt.dumpfile, 0))
++ if (smbios_decode(buf, size, opt.dumpfile, 0))
+ found++;
+ }
+ else if (memcmp(buf, "_DMI_", 5) == 0)
+@@ -6046,12 +6046,12 @@ int main(int argc, char * const argv[])
+ pr_info("Getting SMBIOS data from sysfs.");
+ if (size >= 24 && memcmp(buf, "_SM3_", 5) == 0)
+ {
+- if (smbios3_decode(buf, SYS_TABLE_FILE, FLAG_NO_FILE_OFFSET))
++ if (smbios3_decode(buf, size, SYS_TABLE_FILE, FLAG_NO_FILE_OFFSET))
+ found++;
+ }
+ else if (size >= 31 && memcmp(buf, "_SM_", 4) == 0)
+ {
+- if (smbios_decode(buf, SYS_TABLE_FILE, FLAG_NO_FILE_OFFSET))
++ if (smbios_decode(buf, size, SYS_TABLE_FILE, FLAG_NO_FILE_OFFSET))
+ found++;
+ }
+ else if (size >= 15 && memcmp(buf, "_DMI_", 5) == 0)
+@@ -6088,12 +6088,12 @@ int main(int argc, char * const argv[])
+
+ if (memcmp(buf, "_SM3_", 5) == 0)
+ {
+- if (smbios3_decode(buf, opt.devmem, 0))
++ if (smbios3_decode(buf, 0x20, opt.devmem, 0))
+ found++;
+ }
+ else if (memcmp(buf, "_SM_", 4) == 0)
+ {
+- if (smbios_decode(buf, opt.devmem, 0))
++ if (smbios_decode(buf, 0x20, opt.devmem, 0))
+ found++;
+ }
+ goto done;
+@@ -6114,7 +6114,7 @@ memory_scan:
+ {
+ if (memcmp(buf + fp, "_SM3_", 5) == 0)
+ {
+- if (smbios3_decode(buf + fp, opt.devmem, 0))
++ if (smbios3_decode(buf + fp, 0x20, opt.devmem, 0))
+ {
+ found++;
+ goto done;
+@@ -6127,7 +6127,7 @@ memory_scan:
+ {
+ if (memcmp(buf + fp, "_SM_", 4) == 0 && fp <= 0xFFE0)
+ {
+- if (smbios_decode(buf + fp, opt.devmem, 0))
++ if (smbios_decode(buf + fp, 0x20, opt.devmem, 0))
+ {
+ found++;
+ goto done;
+--
+2.35.5
@@ -6,6 +6,10 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=b234ee4d69f5fce4486a80fdaf4a4263"
SRC_URI = "${SAVANNAH_NONGNU_MIRROR}/dmidecode/${BP}.tar.xz \
file://0001-Committing-changes-from-do_unpack_extra.patch \
+ file://CVE-2023-30630_1.patch \
+ file://CVE-2023-30630_2.patch \
+ file://CVE-2023-30630_3.patch \
+ file://CVE-2023-30630_4.patch \
"
COMPATIBLE_HOST = "(i.86|x86_64|aarch64|arm|powerpc|powerpc64).*-linux"