| 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-2024-35826: block: Fix page refcounts for unaligned buffers in __bio_release_pages() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| block: Fix page refcounts for unaligned buffers in __bio_release_pages() |
| |
| Fix an incorrect number of pages being released for buffers that do not |
| start at the beginning of a page. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35826 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.1.75 with commit 9025ee1079291fac79c7fcc20086e9f0015f86f4 and fixed in 6.1.84 with commit 242006996d15f5ca62e22f8c7de077d9c4a8f367 |
| Issue introduced in 6.6.14 with commit 8955324cc9f93304efe163120038b38c36c09fba and fixed in 6.6.24 with commit 7d3765550374f71248c55e6206ea1d6fd4537e65 |
| Issue introduced in 6.7.2 with commit d198c15d181cc9d580f0f2c25150b077d1d49c1a and fixed in 6.7.12 with commit ecbd9ced84dd655a8f4cd49d2aad0e80dbf6bf35 |
| Issue introduced in 6.8 with commit 1b151e2435fc3a9b10c8946c6aebe9f3e1938c55 and fixed in 6.8.3 with commit c9d3d2fbde9b8197bce88abcbe8ee8e713ffe7c2 |
| Issue introduced in 6.8 with commit 1b151e2435fc3a9b10c8946c6aebe9f3e1938c55 and fixed in 6.9 with commit 38b43539d64b2fa020b3b9a752a986769f87f7a6 |
| Issue introduced in 4.19.307 with commit d2d0b95ca1b5fefa3deed444a803c9f809db66cf |
| Issue introduced in 5.4.269 with commit 3f4e660144edb053886fc80f587a71ad7afc2ad6 |
| Issue introduced in 5.10.210 with commit bfc0647791d7a8f3e178a896a26c4ef7794876b7 |
| Issue introduced in 5.15.148 with commit 0f2dca516541032fe47a1236c852f58edc662795 |
| |
| 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-2024-35826 |
| 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: |
| block/bio.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/242006996d15f5ca62e22f8c7de077d9c4a8f367 |
| https://git.kernel.org/stable/c/7d3765550374f71248c55e6206ea1d6fd4537e65 |
| https://git.kernel.org/stable/c/ecbd9ced84dd655a8f4cd49d2aad0e80dbf6bf35 |
| https://git.kernel.org/stable/c/c9d3d2fbde9b8197bce88abcbe8ee8e713ffe7c2 |
| https://git.kernel.org/stable/c/38b43539d64b2fa020b3b9a752a986769f87f7a6 |
