CVE-2024-44954: Linux Kernel

Medium severity, CVSS 4.7. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ALSA: line6: Fix racy access to midibuf There can be concurrent accesses to line6 midibuf from both the URB completion callback and the rawmidi API access. This could be a cause of KMSAN warning triggered by syzkaller below (so put as reported-by here). This patch protects the midibuf call of the former code path with a spinlock for avoiding the possible races.

Affected products

• Linux Linux Kernel: before 4.19.320 (fixed in 4.19.320); after 4.20, before 5.4.282 (fixed in 5.4.282); from 5.5, before 5.10.224 (fixed in 5.10.224); after 5.11, before 5.15.165 (fixed in 5.15.165); from 5.16, before 6.1.105 (fixed in 6.1.105); from 6.2, before 6.6.46 (fixed in 6.6.46); …

Published 2024-09-04. Last modified 2026-08-04.