CVE-2026-97909 ASoC: sti: initialize IRQ lock before requesting IRQ
A race condition in the Linux kernel STI audio driver allows a local attacker to cause a denial of service by triggering an interrupt before the lock is initialized.
- 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-2026-97909?
CVE-2026-97909 is a vulnerability in Linux, published on 25 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:
ASoC: sti: initialize IRQ lock before requesting IRQ
uni_reader_init() registers the shared IRQ before initializing reader->irq_lock. A pending interrupt can invoke the handler while the lock is still uninitialized.
Initialize the lock before registering the IRQ so the interrupt path always sees valid lock state.
Which versions are affected by CVE-2026-97909?
How do I fix CVE-2026-97909?
Apply the vendor's patch.
Is CVE-2026-97909 being exploited?
There is no known exploitation of CVE-2026-97909 in the wild and no public exploit code.
Sources
Also known as AZL-104580, BELL-CVE-2026-97909, DEBIAN-CVE-2026-97909, GHSA-7jmc-77v8-c6vf, UBUNTU-CVE-2026-97909.