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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux Kernel
Default version status: unaffected
4.14 to < 56b88b50565cd8b946a2d00b0c83927b7ebb055eaffected
References
- https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1 ↗
- 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 ↗
- https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e ↗
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html ↗
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0266 ↗