| From bippy-7c5fe7eed585 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-2025-21966: dm-flakey: Fix memory corruption in optional corrupt_bio_byte feature |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dm-flakey: Fix memory corruption in optional corrupt_bio_byte feature |
| |
| Fix memory corruption due to incorrect parameter being passed to bio_init |
| |
| The Linux kernel CVE team has assigned CVE-2025-21966 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.5 with commit 1d9a943898533e83f20370c0e1448d606627522e and fixed in 6.6.84 with commit 818330f756f3800c37d738bd36bce60eac949938 |
| Issue introduced in 6.5 with commit 1d9a943898533e83f20370c0e1448d606627522e and fixed in 6.12.20 with commit 5a87e46da2418c57b445371f5ca0958d5779ba5f |
| Issue introduced in 6.5 with commit 1d9a943898533e83f20370c0e1448d606627522e and fixed in 6.13.8 with commit da070843e153471be4297a12fdaa64023276f40e |
| Issue introduced in 6.5 with commit 1d9a943898533e83f20370c0e1448d606627522e and fixed in 6.14 with commit 57e9417f69839cb10f7ffca684c38acd28ceb57b |
| |
| 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-2025-21966 |
| 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: |
| drivers/md/dm-flakey.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/818330f756f3800c37d738bd36bce60eac949938 |
| https://git.kernel.org/stable/c/5a87e46da2418c57b445371f5ca0958d5779ba5f |
| https://git.kernel.org/stable/c/da070843e153471be4297a12fdaa64023276f40e |
| https://git.kernel.org/stable/c/57e9417f69839cb10f7ffca684c38acd28ceb57b |
