| 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-2025-21830: landlock: Handle weird files |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| landlock: Handle weird files |
| |
| A corrupted filesystem (e.g. bcachefs) might return weird files. |
| Instead of throwing a warning and allowing access to such file, treat |
| them as regular files. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21830 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.13 with commit cb2c7d1a1776057c9a1f48ed1250d85e94d4850d and fixed in 5.15.179 with commit a1fccf6b72b56343dd4f2d96b008147f9951eebd |
| Issue introduced in 5.13 with commit cb2c7d1a1776057c9a1f48ed1250d85e94d4850d and fixed in 6.1.129 with commit 7d6121228959ddf44a4b9b6a177384ac7854e2f9 |
| Issue introduced in 5.13 with commit cb2c7d1a1776057c9a1f48ed1250d85e94d4850d and fixed in 6.6.76 with commit 39bb3d56f1c351e76bb18895d0e73796e653d5c1 |
| Issue introduced in 5.13 with commit cb2c7d1a1776057c9a1f48ed1250d85e94d4850d and fixed in 6.12.13 with commit 2569e65d2eb6ac1afe6cb6dfae476afee8b6771a |
| Issue introduced in 5.13 with commit cb2c7d1a1776057c9a1f48ed1250d85e94d4850d and fixed in 6.13.2 with commit 0fde195a373ab1267e60baa9e1a703a97e7464cd |
| Issue introduced in 5.13 with commit cb2c7d1a1776057c9a1f48ed1250d85e94d4850d and fixed in 6.14 with commit 49440290a0935f428a1e43a5ac8dc275a647ff80 |
| |
| 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-2025-21830 |
| 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: |
| security/landlock/fs.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/a1fccf6b72b56343dd4f2d96b008147f9951eebd |
| https://git.kernel.org/stable/c/7d6121228959ddf44a4b9b6a177384ac7854e2f9 |
| https://git.kernel.org/stable/c/39bb3d56f1c351e76bb18895d0e73796e653d5c1 |
| https://git.kernel.org/stable/c/2569e65d2eb6ac1afe6cb6dfae476afee8b6771a |
| https://git.kernel.org/stable/c/0fde195a373ab1267e60baa9e1a703a97e7464cd |
| https://git.kernel.org/stable/c/49440290a0935f428a1e43a5ac8dc275a647ff80 |
