| 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-2024-42257: ext4: use memtostr_pad() for s_volume_name |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ext4: use memtostr_pad() for s_volume_name |
| |
| As with the other strings in struct ext4_super_block, s_volume_name is |
| not NUL terminated. The other strings were marked in commit 072ebb3bffe6 |
| ("ext4: add nonstring annotations to ext4.h"). Using strscpy() isn't |
| the right replacement for strncpy(); it should use memtostr_pad() |
| instead. |
| |
| The Linux kernel CVE team has assigned CVE-2024-42257 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.10 with commit 744a56389f7398f286231e062c2e63f0de01bcc6 and fixed in 6.10.1 with commit 4378be89ddb7de88d984b67ecfd6191686c42817 |
| Issue introduced in 6.10 with commit 744a56389f7398f286231e062c2e63f0de01bcc6 and fixed in 6.11 with commit be27cd64461c45a6088a91a04eba5cd44e1767ef |
| |
| 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-2024-42257 |
| 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/ext4/ext4.h |
| fs/ext4/ioctl.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/4378be89ddb7de88d984b67ecfd6191686c42817 |
| https://git.kernel.org/stable/c/be27cd64461c45a6088a91a04eba5cd44e1767ef |
