CVE-2026-89979 Linux ALSA PCM - Race Condition

Linux kernel ALSA PCM contains a race condition caused by concurrent non-atomic and atomic PCM operations, letting attackers cause inconsistent PCM state and potential system instability, exploit requires concurrent PCM operations.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.16% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Race Condition
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for ALSA PCM race condition.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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