| 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-2024-35821: ubifs: Set page uptodate in the correct place |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ubifs: Set page uptodate in the correct place |
| |
| Page cache reads are lockless, so setting the freshly allocated page |
| uptodate before we've overwritten it with the data it's supposed to have |
| in it will allow a simultaneous reader to see old data. Move the call |
| to SetPageUptodate into ubifs_write_end(), which is after we copied the |
| new data into the page. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35821 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.27 with commit 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d and fixed in 4.19.312 with commit 4aa554832b9dc9e66249df75b8f447d87853e12e |
| Issue introduced in 2.6.27 with commit 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d and fixed in 5.4.274 with commit 778c6ad40256f1c03244fc06d7cdf71f6b5e7310 |
| Issue introduced in 2.6.27 with commit 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d and fixed in 5.10.215 with commit 8f599ab6fabbca4c741107eade70722a98adfd9f |
| Issue introduced in 2.6.27 with commit 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d and fixed in 5.15.154 with commit f19b1023a3758f40791ec166038d6411c8894ae3 |
| Issue introduced in 2.6.27 with commit 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d and fixed in 6.1.84 with commit 142d87c958d9454c3cffa625fab56f3016e8f9f3 |
| Issue introduced in 2.6.27 with commit 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d and fixed in 6.6.24 with commit fc99f4e2d2f1ce766c14e98463c2839194ae964f |
| Issue introduced in 2.6.27 with commit 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d and fixed in 6.7.12 with commit 4b7c4fc60d6a46350fbe54f5dc937aeaa02e675e |
| Issue introduced in 2.6.27 with commit 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d and fixed in 6.8.3 with commit 17772bbe9cfa972ea1ff827319f6e1340de76566 |
| Issue introduced in 2.6.27 with commit 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d and fixed in 6.9 with commit 723012cab779eee8228376754e22c6594229bf8f |
| |
| 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-2024-35821 |
| 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/ubifs/file.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/4aa554832b9dc9e66249df75b8f447d87853e12e |
| https://git.kernel.org/stable/c/778c6ad40256f1c03244fc06d7cdf71f6b5e7310 |
| https://git.kernel.org/stable/c/8f599ab6fabbca4c741107eade70722a98adfd9f |
| https://git.kernel.org/stable/c/f19b1023a3758f40791ec166038d6411c8894ae3 |
| https://git.kernel.org/stable/c/142d87c958d9454c3cffa625fab56f3016e8f9f3 |
| https://git.kernel.org/stable/c/fc99f4e2d2f1ce766c14e98463c2839194ae964f |
| https://git.kernel.org/stable/c/4b7c4fc60d6a46350fbe54f5dc937aeaa02e675e |
| https://git.kernel.org/stable/c/17772bbe9cfa972ea1ff827319f6e1340de76566 |
| https://git.kernel.org/stable/c/723012cab779eee8228376754e22c6594229bf8f |
