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Date: Wed, 1 May 2024 14:57:19 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-27034: f2fs: compress: fix to cover normal cluster write with cp_rwsem Description =========== In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: fix to cover normal cluster write with cp_rwsem When we overwrite compressed cluster w/ normal cluster, we should not unlock cp_rwsem during f2fs_write_raw_pages(), otherwise data will be corrupted if partial blocks were persisted before CP & SPOR, due to cluster metadata wasn't updated atomically. The Linux kernel CVE team has assigned CVE-2024-27034 to this issue. Affected and fixed versions =========================== Issue introduced in 5.6 with commit 4c8ff7095bef and fixed in 5.15.153 with commit 7d420eaaa18e Issue introduced in 5.6 with commit 4c8ff7095bef and fixed in 6.1.83 with commit 542c8b3c774a Issue introduced in 5.6 with commit 4c8ff7095bef and fixed in 6.6.23 with commit 75abfd61392b Issue introduced in 5.6 with commit 4c8ff7095bef and fixed in 6.7.11 with commit 2b1b14d9fc94 Issue introduced in 5.6 with commit 4c8ff7095bef and fixed in 6.8.2 with commit 52982edfcefd Issue introduced in 5.6 with commit 4c8ff7095bef and fixed in 6.9-rc1 with commit fd244524c2cf 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-2024-27034 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/compress.c fs/f2fs/data.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/7d420eaaa18ec8e2bb4eeab8c65c00492ef6f416 https://git.kernel.org/stable/c/542c8b3c774a480bfd0804291a12f6f2391b0cd1 https://git.kernel.org/stable/c/75abfd61392b1db391bde6d738a30d685b843286 https://git.kernel.org/stable/c/2b1b14d9fc94b8feae20808684c8af28ec80f45b https://git.kernel.org/stable/c/52982edfcefd475cc34af663d5c47c0cddaa5739 https://git.kernel.org/stable/c/fd244524c2cf07b5f4c3fe8abd6a99225c76544b
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