| 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-2024-26772: ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal() |
| |
| Places the logic for checking if the group's block bitmap is corrupt under |
| the protection of the group lock to avoid allocating blocks from the group |
| with a corrupted block bitmap. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26772 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.308 with commit 5a6dcc4ad0f7f7fa8e8d127b5526e7c5f2d38a43 |
| Fixed in 5.4.270 with commit 6b92b1bc16d691c95b152c6dbf027ad64315668d |
| Fixed in 5.10.211 with commit ffeb72a80a82aba59a6774b0611f792e0ed3b0b7 |
| Fixed in 5.15.150 with commit 8de8305a25bfda607fc13475ebe84b978c96d7ff |
| Fixed in 6.1.80 with commit d639102f4cbd4cb65d1225dba3b9265596aab586 |
| Fixed in 6.6.19 with commit d3bbe77a76bc52e9d4d0a120f1509be36e25c916 |
| Fixed in 6.7.7 with commit 21dbe20589c7f48e9c5d336ce6402bcebfa6d76a |
| Fixed in 6.8 with commit 832698373a25950942c04a512daa652c18a9b513 |
| |
| 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-2024-26772 |
| 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/ext4/mballoc.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/5a6dcc4ad0f7f7fa8e8d127b5526e7c5f2d38a43 |
| https://git.kernel.org/stable/c/6b92b1bc16d691c95b152c6dbf027ad64315668d |
| https://git.kernel.org/stable/c/ffeb72a80a82aba59a6774b0611f792e0ed3b0b7 |
| https://git.kernel.org/stable/c/8de8305a25bfda607fc13475ebe84b978c96d7ff |
| https://git.kernel.org/stable/c/d639102f4cbd4cb65d1225dba3b9265596aab586 |
| https://git.kernel.org/stable/c/d3bbe77a76bc52e9d4d0a120f1509be36e25c916 |
| https://git.kernel.org/stable/c/21dbe20589c7f48e9c5d336ce6402bcebfa6d76a |
| https://git.kernel.org/stable/c/832698373a25950942c04a512daa652c18a9b513 |
