CVE-2022-49288: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent prealloc proc writes We have no protection against concurrent PCM buffer preallocation changes via proc files, and it may potentially lead to UAF or some weird problem. This patch applies the PCM open_mutex to the proc write operation for avoiding the racy proc writes and the PCM stream open (and further operations).

Affected products

• Linux Linux Kernel: before 4.14.279 (fixed in 4.14.279); from 4.15, before 4.19.243 (fixed in 4.19.243); from 4.20, before 5.4.193 (fixed in 5.4.193); from 5.5, before 5.10.109 (fixed in 5.10.109); from 5.11, before 5.15.32 (fixed in 5.15.32); from 5.16, before 5.16.18 (fixed in 5.16.18); …

Published 2025-02-26. Last modified 2026-06-17.