| From bippy-d175d3acf727 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-2024-26819: dm: limit the number of targets and parameter size area |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dm: limit the number of targets and parameter size area |
| |
| The kvmalloc function fails with a warning if the size is larger than |
| INT_MAX. The warning was triggered by a syscall testing robot. |
| |
| In order to avoid the warning, this commit limits the number of targets to |
| 1048576 and the size of the parameter area to 1073741824. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26819 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.10.210 with commit a891a0621e72 |
| Fixed in 5.15.149 with commit 888a0a46b80f |
| Fixed in 6.1.79 with commit c5d83ac2bf6c |
| Fixed in 6.6.18 with commit 438d19492b7f |
| Fixed in 6.7.6 with commit cd70175481f6 |
| Fixed in 6.8 with commit bd504bcfec41 |
| |
| 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-2024-26819 |
| 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-core.h |
| drivers/md/dm-ioctl.c |
| drivers/md/dm-table.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/a891a0621e725e85529985139cada8cb5a74a116 |
| https://git.kernel.org/stable/c/888a0a46b80fa37eacfe81faf47ba0b83876251d |
| https://git.kernel.org/stable/c/c5d83ac2bf6ca668a39ffb1a576899a66153ba19 |
| https://git.kernel.org/stable/c/438d19492b7f002334573bae43276297eb234c80 |
| https://git.kernel.org/stable/c/cd70175481f63af31901dd463e44386f033c3f4c |
| https://git.kernel.org/stable/c/bd504bcfec41a503b32054da5472904b404341a4 |
