CVE-2026-98308 ALSA: hda: trace PCM open only after assigning a stream
A null pointer dereference in the Linux kernel ALSA HDA driver can cause a system crash when hardware streams are exhausted.
- 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-2026-98308?
CVE-2026-98308 is a vulnerability in Linux, published on 6 Oct 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: hda: trace PCM open only after assigning a stream
Stream assignment can fail when hardware streams are exhausted. Move the tracepoint after the NULL check because its payload accesses the assigned stream tag.
Detected by static analysis and reviewed with AI-assisted source auditing.
Which versions are affected by CVE-2026-98308?
How do I fix CVE-2026-98308?
Apply the vendor's patch.
Is CVE-2026-98308 being exploited?
There is no known exploitation of CVE-2026-98308 in the wild and no public exploit code.
Sources
Also known as AZL-106320, BELL-CVE-2026-98308, DEBIAN-CVE-2026-98308, GHSA-pq22-7f6j-hfpf, UBUNTU-CVE-2026-98308.