| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2023-53081: ocfs2: fix data corruption after failed write |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ocfs2: fix data corruption after failed write |
| |
| When buffered write fails to copy data into underlying page cache page, |
| ocfs2_write_end_nolock() just zeroes out and dirties the page. This can |
| leave dirty page beyond EOF and if page writeback tries to write this page |
| before write succeeds and expands i_size, page gets into inconsistent |
| state where page dirty bit is clear but buffer dirty bits stay set |
| resulting in page data never getting written and so data copied to the |
| page is lost. Fix the problem by invalidating page beyond EOF after |
| failed write. |
| |
| The Linux kernel CVE team has assigned CVE-2023-53081 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.14.204 with commit 7ed80e77c908cbaa686529a49f8ae0060c5caee7 and fixed in 4.14.312 with commit 1629f6f522b2d058019710466a84b240683bbee3 |
| Issue introduced in 4.19.155 with commit 7ce2b16bad2cbfa3fa7bbc42c4448914f639ca47 and fixed in 4.19.280 with commit c26f3ff4c0be590c1250f945ac2e4fc5fcdc5f45 |
| Issue introduced in 5.4.75 with commit f8a6a2ed4b7d1c3c8631eeb6d00572bc853094a8 and fixed in 5.4.240 with commit 4c24eb49ab44351424ac8fe8567f91ea48a06089 |
| Issue introduced in 5.10 with commit 6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b and fixed in 5.10.177 with commit 91d7a4bd5656552d6259e2d0f8859f9e8cc5ef68 |
| Issue introduced in 5.10 with commit 6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b and fixed in 5.15.105 with commit a9e53869cb43c96d6d851c491fd4e26430ab6ba6 |
| Issue introduced in 5.10 with commit 6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b and fixed in 6.1.21 with commit 47eb055ad3588fc96d34e9e1dd87b210ce62906b |
| Issue introduced in 5.10 with commit 6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b and fixed in 6.2.8 with commit 205759c6c18f54659b0b5976b14a52d1b3eb9f57 |
| Issue introduced in 5.10 with commit 6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b and fixed in 6.3 with commit 90410bcf873cf05f54a32183afff0161f44f9715 |
| Issue introduced in 4.9.242 with commit acef5107e2eacb08a16ad5db60320d65bd26a6c0 |
| Issue introduced in 5.9.5 with commit 36ed9e604215f58cec0381ca5fcc6da05f2d87ca |
| |
| 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-2023-53081 |
| 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/ocfs2/aops.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/1629f6f522b2d058019710466a84b240683bbee3 |
| https://git.kernel.org/stable/c/c26f3ff4c0be590c1250f945ac2e4fc5fcdc5f45 |
| https://git.kernel.org/stable/c/4c24eb49ab44351424ac8fe8567f91ea48a06089 |
| https://git.kernel.org/stable/c/91d7a4bd5656552d6259e2d0f8859f9e8cc5ef68 |
| https://git.kernel.org/stable/c/a9e53869cb43c96d6d851c491fd4e26430ab6ba6 |
| https://git.kernel.org/stable/c/47eb055ad3588fc96d34e9e1dd87b210ce62906b |
| https://git.kernel.org/stable/c/205759c6c18f54659b0b5976b14a52d1b3eb9f57 |
| https://git.kernel.org/stable/c/90410bcf873cf05f54a32183afff0161f44f9715 |
