| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.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 4c8ff7095bef64fc47e996a938f7d57f9e077da3 and fixed in 5.15.153 with commit 7d420eaaa18ec8e2bb4eeab8c65c00492ef6f416 |
| Issue introduced in 5.6 with commit 4c8ff7095bef64fc47e996a938f7d57f9e077da3 and fixed in 6.1.83 with commit 542c8b3c774a480bfd0804291a12f6f2391b0cd1 |
| Issue introduced in 5.6 with commit 4c8ff7095bef64fc47e996a938f7d57f9e077da3 and fixed in 6.6.23 with commit 75abfd61392b1db391bde6d738a30d685b843286 |
| Issue introduced in 5.6 with commit 4c8ff7095bef64fc47e996a938f7d57f9e077da3 and fixed in 6.7.11 with commit 2b1b14d9fc94b8feae20808684c8af28ec80f45b |
| Issue introduced in 5.6 with commit 4c8ff7095bef64fc47e996a938f7d57f9e077da3 and fixed in 6.8.2 with commit 52982edfcefd475cc34af663d5c47c0cddaa5739 |
| Issue introduced in 5.6 with commit 4c8ff7095bef64fc47e996a938f7d57f9e077da3 and fixed in 6.9 with commit fd244524c2cf07b5f4c3fe8abd6a99225c76544b |
| |
| 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 |
