Improper Validation of Array Index in Linux kernel - CVE-2026-80969
Published: September 12, 2026
Vulnerability identifier: #VU149432
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-2026-80969
CWE-ID: CWE-129
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause an out-of-bounds memory access.
The vulnerability exists due to improper validation of an array index in the ALSA mpu401 driver probe routine when manually binding a device through the sysfs interface with an invalid card index. A local user can set an invalid card index to cause an out-of-bounds memory access.
Affected software
Linux kernel
How to mitigate CVE-2026-80969
Install security update from vendor's repository.