vulnerability
Arch Linux: Use After Free (CVE-2023-0266)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:A/AC:M/Au:S/C:P/I:C/A:C) | Jan 30, 2023 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:A/AC:M/Au:S/C:P/I:C/A:C)
Published
Jan 30, 2023
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e
Solution
arch-linux-upgrade-latest
References
- CVE-2023-0266
- https://attackerkb.com/topics/CVE-2023-0266
- URL-https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4
- URL-https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e
- URL-https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1
- URL-https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- CWE-416
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