| 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-2024-26791: btrfs: dev-replace: properly validate device names |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| btrfs: dev-replace: properly validate device names |
| |
| There's a syzbot report that device name buffers passed to device |
| replace are not properly checked for string termination which could lead |
| to a read out of bounds in getname_kernel(). |
| |
| Add a helper that validates both source and target device name buffers. |
| For devid as the source initialize the buffer to empty string in case |
| something tries to read it later. |
| |
| This was originally analyzed and fixed in a different way by Edward Adam |
| Davis (see links). |
| |
| The Linux kernel CVE team has assigned CVE-2024-26791 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.309 with commit 11d7a2e429c02d51e2dc90713823ea8b8d3d3a84 |
| Fixed in 5.4.271 with commit c6652e20d7d783d060fe5f987eac7b5cabe31311 |
| Fixed in 5.10.212 with commit 2886fe308a83968dde252302884a1e63351cf16d |
| Fixed in 5.15.151 with commit ab2d68655d0f04650bef09fee948ff80597c5fb9 |
| Fixed in 6.1.81 with commit f590040ce2b712177306b03c2a63b16f7d48d3c8 |
| Fixed in 6.6.21 with commit b1690ced4d2d8b28868811fb81cd33eee5aefee1 |
| Fixed in 6.7.9 with commit 343eecb4ff49a7b1cc1dfe86958a805cf2341cfb |
| Fixed in 6.8 with commit 9845664b9ee47ce7ee7ea93caf47d39a9d4552c4 |
| |
| 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-2024-26791 |
| 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/dev-replace.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/11d7a2e429c02d51e2dc90713823ea8b8d3d3a84 |
| https://git.kernel.org/stable/c/c6652e20d7d783d060fe5f987eac7b5cabe31311 |
| https://git.kernel.org/stable/c/2886fe308a83968dde252302884a1e63351cf16d |
| https://git.kernel.org/stable/c/ab2d68655d0f04650bef09fee948ff80597c5fb9 |
| https://git.kernel.org/stable/c/f590040ce2b712177306b03c2a63b16f7d48d3c8 |
| https://git.kernel.org/stable/c/b1690ced4d2d8b28868811fb81cd33eee5aefee1 |
| https://git.kernel.org/stable/c/343eecb4ff49a7b1cc1dfe86958a805cf2341cfb |
| https://git.kernel.org/stable/c/9845664b9ee47ce7ee7ea93caf47d39a9d4552c4 |
