Improper Validation of Array Index in Linux kernel - CVE-2026-80966
Published: September 12, 2026
Vulnerability identifier: #VU149429
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80966
CWE-ID: CWE-129
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform an out-of-bounds access.
The vulnerability exists due to improper validation of an array index in the ALSA portman2x4 driver when binding the driver through sysfs with a negative card index. A local user can supply a negative card index to perform an out-of-bounds access.
Affected software
Linux kernel
How to mitigate CVE-2026-80966
Install security update from vendor's repository.