| 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-2024-46752: btrfs: replace BUG_ON() with error handling at update_ref_for_cow() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| btrfs: replace BUG_ON() with error handling at update_ref_for_cow() |
| |
| Instead of a BUG_ON() just return an error, log an error message and |
| abort the transaction in case we find an extent buffer belonging to the |
| relocation tree that doesn't have the full backref flag set. This is |
| unexpected and should never happen (save for bugs or a potential bad |
| memory). |
| |
| The Linux kernel CVE team has assigned CVE-2024-46752 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.15.167 with commit b50857b96429a09fd3beed9f7f21b7bb7c433688 |
| Fixed in 6.1.110 with commit 0fbac73a97286a7ec72229cb9b42d760a2c717ac |
| Fixed in 6.6.51 with commit 41a0f85e268d72fe04f731b8ceea4748c2d65491 |
| Fixed in 6.10.10 with commit f895db00c65e5d77c437cce946da9ec29dcdf563 |
| Fixed in 6.11 with commit b56329a782314fde5b61058e2a25097af7ccb675 |
| |
| 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-2024-46752 |
| 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/btrfs/ctree.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/b50857b96429a09fd3beed9f7f21b7bb7c433688 |
| https://git.kernel.org/stable/c/0fbac73a97286a7ec72229cb9b42d760a2c717ac |
| https://git.kernel.org/stable/c/41a0f85e268d72fe04f731b8ceea4748c2d65491 |
| https://git.kernel.org/stable/c/f895db00c65e5d77c437cce946da9ec29dcdf563 |
| https://git.kernel.org/stable/c/b56329a782314fde5b61058e2a25097af7ccb675 |
