CVE-2024-57893

ALSA: seq: oss: Fix races at processing SysEx messages

MEDIUM

6.3

CVSS Score

Published: January 15, 2025 at 01:05 PM UTC

Updated: August 5, 2026 at 12:44 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM6.3

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: oss: Fix races at processing SysEx messages OSS sequencer handles the SysEx messages split in 6 bytes packets, and ALSA sequencer OSS layer tries to combine those. It stores the data in the internal buffer and this access is racy as of now, which may lead to the out-of-bounds access. As a temporary band-aid fix, introduce a mutex for serializing the process of the SysEx message packets.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v < 6.1.1242.6.12 ≤ v < 6.1.1242.6.12 ≤ v < 6.12.92.6.12 ≤ v < 6.132.6.12 ≤ v < 6.6.706.2 ≤ v < 6.6.706.7 ≤ v < 6.12.91da177e4c3f41524e886b7f1b8a0c1fc7321cac2 6.13 rc1 6.13 rc2 6.13 rc3 6.13 rc4 6.13 rc5

Vendor states this is fixed in 0179488ca992d79908b8e26b9213f1554fc5bacc (fixed)

Vendor states this is fixed in 9d382112b36382aa65aad765f189ebde9926c101 (fixed)

Vendor states this is fixed in cff1de87ed14fc0f2332213d2367100e7ad0753a (fixed)

Vendor states this is fixed in d2392b79d8af3714ea8878b71c66dc49d3110f44 (fixed)

Vendor states this is fixed in 2.6.12 (unaffected)

Vendor states this is fixed in 6.1.124 (unaffected)

Vendor states this is fixed in 6.12.9 (unaffected)

Vendor states this is fixed in 6.13 (unaffected)

Vendor states this is fixed in 6.6.70 (unaffected)