Race condition in Linux kernel - CVE-2026-89980

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Main Vulnerability Database Vulnerabilities #VU150314

Race condition in Linux kernel - CVE-2026-89980

Published: September 16, 2026


Vulnerability identifier: #VU150314
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89980
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise confidentiality, integrity, and availability.

The vulnerability exists due to a race condition involving uninitialized locks in the ALSA Harmony driver when a pending interrupt is handled after IRQ registration and before lock initialization. A remote attacker can trigger a pending interrupt during device initialization to compromise confidentiality, integrity, and availability.


Affected software

Linux kernel
Debian Linux
SUSE Linux Micro
SUSE Linux Micro Extras
kernel-default
kernel-64kb
kernel-64kb-debugsource
kernel-64kb-devel
kernel-default-devel
kernel-syms
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-debugsource
kernel-default-devel-debuginfo
linux (Debian package)

How to mitigate CVE-2026-89980

Install security update from vendor's repository.

kernel-default - update to 6.4.0-159998.55.1
kernel-64kb - update to 6.4.0-159998.55.1
kernel-64kb-debugsource - update to 6.4.0-159998.55.1
kernel-64kb-devel - update to 6.4.0-159998.55.1
kernel-default-devel - update to 6.4.0-159998.55.1
kernel-syms - update to 6.4.0-159998.55.1
kernel-obs-build - update to 6.4.0-159998.55.1
kernel-obs-build-debugsource - update to 6.4.0-159998.55.1
kernel-default-debugsource - update to 6.4.0-159998.55.1
kernel-default-devel-debuginfo - update to 6.4.0-159998.55.1
linux (Debian package) - update to 6.12.111-1

External References

Related Security Bulletins