CVE-2024-44954

MEDIUM

Linux Kernel - Race Condition in ALSA Line6 MIDI Buffer Access

Title source: llm
STIX 2.1

Description

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.

References (10)

Core 10
Core References

Scores

CVSS v3 4.7
EPSS 0.0017
EPSS Percentile 6.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-362
Status published
Products (27)
linux/Kernel 2.6.30 - 4.19.320linux
linux/Kernel 4.20.0 - 5.4.282linux
linux/Kernel 5.11.0 - 5.15.165linux
linux/Kernel 5.16.0 - 6.1.105linux
linux/Kernel 5.5.0 - 5.10.224linux
linux/Kernel 6.2.0 - 6.6.46linux
linux/Kernel 6.7.0 - 6.10.5linux
Linux/Linux < 2.6.30
Linux/Linux 2.6.30
Linux/Linux 4.19.320 - 4.19.*
... and 17 more
Published Sep 04, 2024
Tracked Since Feb 18, 2026