CVE-2026-80968 ALSA: mts64: Check card index validity at probe
A missing check in the ALSA mts64 driver allows out-of-bounds access via negative card indices, potentially causing crashes or data leaks.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-80968?
CVE-2026-80968 is a memory corruption vulnerability in Linux, published on 11 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: mts64: Check card index validity at probe
Although mts64 driver has a check of the given devptr->id value, it doesn't check for a negative id, which is often given as "none" or such value when bound via sysfs. This may lead to OOB access for index[] and other parameters.
Add a sanity check for the card index and warn/correct it if it's a value out of the range.
Which versions are affected by CVE-2026-80968?
How do I fix CVE-2026-80968?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-80968 being exploited?
There is no known exploitation of CVE-2026-80968 in the wild and no public exploit code.
Sources
Also known as AZL-100313, BELL-CVE-2026-80968, DEBIAN-CVE-2026-80968, GHSA-x5g7-h5wf-2v48, UBUNTU-CVE-2026-80968.