CVE-2026-89980 ALSA: harmony: initialize locks before requesting IRQ
A race condition in the ALSA harmony driver allows a pending interrupt to access uninitialized locks, potentially causing a kernel crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-89980?
CVE-2026-89980 is a high-severity vulnerability in Linux, published on 16 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ALSA: harmony: initialize locks before requesting IRQ
snd_harmony_create() registers the IRQ before initializing h->lock and h->mixer_lock. A pending interrupt can invoke the handler while these locks are uninitialized.
Initialize both locks before requesting the IRQ so the handler always sees valid lock state.
Which versions are affected by CVE-2026-89980?
How do I fix CVE-2026-89980?
Apply the vendor's patch.
Is CVE-2026-89980 being exploited?
There is no known exploitation of CVE-2026-89980 in the wild and no public exploit code.
Sources
Also known as AZL-101262, BELL-CVE-2026-89980, DEBIAN-CVE-2026-89980, GHSA-w4v8-wqj5-pmgx, UBUNTU-CVE-2026-89980.