From patchwork Mon Dec 26 13:50:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Vivek Kumbhar X-Patchwork-Id: 17219 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5008C3DA79 for ; Mon, 26 Dec 2022 13:51:00 +0000 (UTC) Received: from mail-pg1-f175.google.com (mail-pg1-f175.google.com [209.85.215.175]) by mx.groups.io with SMTP id smtpd.web11.136627.1672062657900798649 for ; Mon, 26 Dec 2022 05:50:58 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@mvista.com header.s=google header.b=TvAVT8cV; spf=pass (domain: mvista.com, ip: 209.85.215.175, mailfrom: vkumbhar@mvista.com) Received: by mail-pg1-f175.google.com with SMTP id 79so7186812pgf.11 for ; Mon, 26 Dec 2022 05:50:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mvista.com; s=google; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=0LcIsx6ykgjYCLdBdctjUT7kq4WjcNTITocNdNzrmeA=; b=TvAVT8cVdzzUxOLh0J+nB992ZrnjhjnmrtjMpjsTOiB89NTfBMSmHEQta6RJwIbbXC GDeNcjhr77Gpfk9m25hItVrN9ztCCe5/P+LYlklPrUiHG/MYb1bdrTkIEdAioTicwG5N jVwpgYe1qHA3YqX442OCqNEfB7XGfuV0CVNxo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=0LcIsx6ykgjYCLdBdctjUT7kq4WjcNTITocNdNzrmeA=; b=7rn/0RSKe4cTCTJbCk7IXIV3GdF2jVOz/aBd2ff+SD96oqjyxeHAvsyYPKcckxTImn eodGpFVOlM1IerRAFngK4Spx/EH4MwNcy3dcmMvot0wwjbObT6MyQA97dtTTe59Rt7bC 2/kXUUw21LmpfOULVLBslfrPDh+H2g/L39Js4D5fxzyj/wpACD7VpWyAbj5obfNDjZfg g7KImLt7G9yayfuDaS2/slx2RsbPJWWauM/xGwsxqzBX2XAy0Mu4vQZ75sH7y/u1fiDb tdVGXQYIHpWBvFvlSWReUYfV4NgT9sYy7yZXGwLwPv48t8DGLM/SuE97eO9jhDfXPNjK VYpw== X-Gm-Message-State: AFqh2kr9sQcP4JNGz4EO9vihZXjYemsokxlP+FLuUvcpBiXnj8s2gvN9 U7xURQFkPGzbRdCcCcK6MpEFJ7xwOTidH/BW X-Google-Smtp-Source: AMrXdXuP0GahBUaDqzcc1B+wd2NsuRexPMZHuAVua9OYypMmHrzk7MscFovnT4ZlubnNQxV52Cegpg== X-Received: by 2002:a05:6a00:1f0d:b0:573:d183:4218 with SMTP id be13-20020a056a001f0d00b00573d1834218mr33189679pfb.10.1672062656677; Mon, 26 Dec 2022 05:50:56 -0800 (PST) Received: from vkumbhar-latitude3400.mvista.com ([116.74.155.15]) by smtp.gmail.com with ESMTPSA id x68-20020a626347000000b0056bc742d21esm7103001pfb.176.2022.12.26.05.50.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Dec 2022 05:50:56 -0800 (PST) From: Vivek Kumbhar X-Google-Original-From: Vivek Kumbhar To: openembedded-core@lists.openembedded.org Cc: Vivek Kumbhar Subject: [OE-core][dunfell][PATCH] qemu: fix CVE-2021-3507 fdc heap buffer overflow in DMA read data transfers Date: Mon, 26 Dec 2022 19:20:40 +0530 Message-Id: <20221226135040.259265-1-vkumbhar@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Mon, 26 Dec 2022 13:51:00 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/175021 From: Vivek Kumbhar Signed-off-by: Vivek Kumbhar --- meta/recipes-devtools/qemu/qemu.inc | 1 + .../qemu/qemu/CVE-2021-3507.patch | 87 +++++++++++++++++++ 2 files changed, 88 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2021-3507.patch diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index a915b54c1a..fff2c87780 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -114,6 +114,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2021-3750.patch \ file://CVE-2021-3638.patch \ file://CVE-2021-20196.patch \ + file://CVE-2021-3507.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2021-3507.patch b/meta/recipes-devtools/qemu/qemu/CVE-2021-3507.patch new file mode 100644 index 0000000000..4ff3413f8e --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2021-3507.patch @@ -0,0 +1,87 @@ +From defac5e2fbddf8423a354ff0454283a2115e1367 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= +Date: Thu, 18 Nov 2021 12:57:32 +0100 +Subject: [PATCH] hw/block/fdc: Prevent end-of-track overrun (CVE-2021-3507) +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Per the 82078 datasheet, if the end-of-track (EOT byte in +the FIFO) is more than the number of sectors per side, the +command is terminated unsuccessfully: + +* 5.2.5 DATA TRANSFER TERMINATION + + The 82078 supports terminal count explicitly through + the TC pin and implicitly through the underrun/over- + run and end-of-track (EOT) functions. For full sector + transfers, the EOT parameter can define the last + sector to be transferred in a single or multisector + transfer. If the last sector to be transferred is a par- + tial sector, the host can stop transferring the data in + mid-sector, and the 82078 will continue to complete + the sector as if a hardware TC was received. The + only difference between these implicit functions and + TC is that they return "abnormal termination" result + status. Such status indications can be ignored if they + were expected. + +* 6.1.3 READ TRACK + + This command terminates when the EOT specified + number of sectors have been read. If the 82078 + does not find an I D Address Mark on the diskette + after the second· occurrence of a pulse on the + INDX# pin, then it sets the IC code in Status Regis- + ter 0 to "01" (Abnormal termination), sets the MA bit + in Status Register 1 to "1", and terminates the com- + mand. + +* 6.1.6 VERIFY + + Refer to Table 6-6 and Table 6-7 for information + concerning the values of MT and EC versus SC and + EOT value. + +* Table 6·6. Result Phase Table + +* Table 6-7. Verify Command Result Phase Table + +Fix by aborting the transfer when EOT > # Sectors Per Side. + +Cc: qemu-stable@nongnu.org +Cc: Hervé Poussineau +Fixes: baca51faff0 ("floppy driver: disk geometry auto detect") +Reported-by: Alexander Bulekov +Resolves: https://gitlab.com/qemu-project/qemu/-/issues/339 +Signed-off-by: Philippe Mathieu-Daudé +Message-Id: <20211118115733.4038610-2-philmd@redhat.com> +Reviewed-by: Hanna Reitz +Signed-off-by: Kevin Wolf + +Upstream-Status: Backport [https://github.com/qemu/qemu/commit/defac5e2fbddf8423a354ff0454283a2115e1367] +CVE: CVE-2021-3507 +Signed-off-by: Vivek Kumbhar +--- + hw/block/fdc.c | 8 ++++++++ + 1 file changed, 8 insertions(+) + +diff --git a/hw/block/fdc.c b/hw/block/fdc.c +index 347875a0cdae..57bb355794a9 100644 +--- a/hw/block/fdc.c ++++ b/hw/block/fdc.c +@@ -1530,6 +1530,14 @@ static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction) + int tmp; + fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]); + tmp = (fdctrl->fifo[6] - ks + 1); ++ if (tmp < 0) { ++ FLOPPY_DPRINTF("invalid EOT: %d\n", tmp); ++ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_MA, 0x00); ++ fdctrl->fifo[3] = kt; ++ fdctrl->fifo[4] = kh; ++ fdctrl->fifo[5] = ks; ++ return; ++ } + if (fdctrl->fifo[0] & 0x80) + tmp += fdctrl->fifo[6]; + fdctrl->data_len *= tmp;