Unrated severityCISA KEVNVD Advisory· Published Jan 30, 2023· Updated Oct 21, 2025
Use after free in SNDRV_CTL_IOCTL_ELEM in Linux Kernel
CVE-2023-0266
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
Affected products
1- Linux/Linux Kernelv5Range: 4.14
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- 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.patchmitre
- github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055emitre
- github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1mitre
- lists.debian.org/debian-lts-announce/2023/05/msg00006.htmlmitre
News mentions
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