From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2267D144316 for ; Sat, 17 Aug 2024 08:55:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723884924; cv=none; b=UQKZ5lfkcHPaVvkKTxhTlWUxK5pt6IeDypmny1RF/VresJWA5vxkfVmnmXoyevRSOoZelnAi2TJDDUUai+PjQCzuFgyPwoL+KpiIC10JGiNj00TMOXUN02ofCxl/oV/jUBXId2OO19SZtIvQTFIJ6mfPlCqrXvNh4fNmsy4/U1I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723884924; c=relaxed/simple; bh=8l81gwH5N9ILiQ/t5y63VnPahuQbop9FOXYa+4QN4oA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=goy1G6yMWsaqQRlJdNndybijotw57mnWHR8HM6kOiQZDcBRddnnaFj6DV1OX+7BSG2Lr1A8yMbdNzzHPlmu19MIN9MLdvcq/7cONQTmh3bsiS/sp/BwmH/oIaZSsRsavSyvQzRFAFRvo+Pw+3JRqkDvh1fTZhOb/suHalDSfOAc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=TBRjLg5V; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="TBRjLg5V" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9C9F3C116B1; Sat, 17 Aug 2024 08:55:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723884924; bh=8l81gwH5N9ILiQ/t5y63VnPahuQbop9FOXYa+4QN4oA=; h=From:To:Cc:Subject:Date:Reply-to:From; b=TBRjLg5VQcXTtlYd8RzFTgBGXCLa7iYgrtOI2n7GTG+Vupz/aCpeIXYhQEPJQvO6+ GjgMZYtmTomM9hBrk/mdpukmaqtKaMANp0qEiO5PgDhfFbezrC32PsvP10hampuJUI oTU0aVycT5g2luoQlfgJUB95HiPYfDGiNJULS6vk= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2024-42273: f2fs: assign CURSEG_ALL_DATA_ATGC if blkaddr is valid Date: Sat, 17 Aug 2024 10:54:47 +0200 Message-ID: <2024081740-CVE-2024-42273-9b87@gregkh> X-Mailer: git-send-email 2.46.0 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=2994; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=8l81gwH5N9ILiQ/t5y63VnPahuQbop9FOXYa+4QN4oA=; b=owGbwMvMwCRo6H6F97bub03G02pJDGkHUgM28SisX1Vx1lik6/XyWsa+/gYLx3TZPbltN9WnL 7K59rOkI5aFQZCJQVZMkeXLNp6j+ysOKXoZ2p6GmcPKBDKEgYtTACai6cewYI9M76+YDOHW42b7 W5Vmfz3+f4GFA8OCqZsTvm6VW7Tq0WqfdZX/89x0M041AwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: f2fs: assign CURSEG_ALL_DATA_ATGC if blkaddr is valid mkdir /mnt/test/comp f2fs_io setflags compression /mnt/test/comp dd if=/dev/zero of=/mnt/test/comp/testfile bs=16k count=1 truncate --size 13 /mnt/test/comp/testfile In the above scenario, we can get a BUG_ON. kernel BUG at fs/f2fs/segment.c:3589! Call Trace: do_write_page+0x78/0x390 [f2fs] f2fs_outplace_write_data+0x62/0xb0 [f2fs] f2fs_do_write_data_page+0x275/0x740 [f2fs] f2fs_write_single_data_page+0x1dc/0x8f0 [f2fs] f2fs_write_multi_pages+0x1e5/0xae0 [f2fs] f2fs_write_cache_pages+0xab1/0xc60 [f2fs] f2fs_write_data_pages+0x2d8/0x330 [f2fs] do_writepages+0xcf/0x270 __writeback_single_inode+0x44/0x350 writeback_sb_inodes+0x242/0x530 __writeback_inodes_wb+0x54/0xf0 wb_writeback+0x192/0x310 wb_workfn+0x30d/0x400 The reason is we gave CURSEG_ALL_DATA_ATGC to COMPR_ADDR where the page was set the gcing flag by set_cluster_dirty(). The Linux kernel CVE team has assigned CVE-2024-42273 to this issue. Affected and fixed versions =========================== Issue introduced in 6.1.77 with commit 7c972c894575 and fixed in 6.1.104 with commit 5fd057160ab2 Issue introduced in 6.6.16 with commit 417b8a91f4e8 and fixed in 6.6.45 with commit 4239571c5db4 Issue introduced in 6.8 with commit 4961acdd65c9 and fixed in 6.10.4 with commit 0cd106612396 Issue introduced in 6.8 with commit 4961acdd65c9 and fixed in 6.11-rc1 with commit 8cb1f4080dd9 Issue introduced in 5.15.149 with commit 7ea0f29d9fd8 Issue introduced in 6.7.4 with commit b8094c0f1aae Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2024-42273 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: fs/f2fs/segment.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/5fd057160ab240dd816ae09b625395d54c297de1 https://git.kernel.org/stable/c/4239571c5db46a42f723b8fa8394039187c34439 https://git.kernel.org/stable/c/0cd106612396656d6f1ca17ef192c6759bb60791 https://git.kernel.org/stable/c/8cb1f4080dd91c6e6b01dbea013a3f42341cb6a1