CVE-2024-44954

medium

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

https://git.kernel.org/stable/c/e7e7d2b180d8f297cea6db43ea72402fd33e1a29

https://git.kernel.org/stable/c/c80f454a805443c274394b1db0d1ebf477abd94e

https://git.kernel.org/stable/c/a54da4b787dcac60b598da69c9c0072812b8282d

https://git.kernel.org/stable/c/643293b68fbb6c03f5e907736498da17d43f0d81

https://git.kernel.org/stable/c/535df7f896a568a8a1564114eaea49d002cb1747

https://git.kernel.org/stable/c/51d87f11dd199bbc6a85982b088ff27bde53b48a

https://git.kernel.org/stable/c/40f3d5cb0e0cbf7fa697913a27d5d361373bdcf5

https://git.kernel.org/stable/c/15b7a03205b31bc5623378c190d22b7ff60026f1

Details

Source: Mitre, NVD

Published: 2024-09-04

Updated: 2024-09-05

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium