Memory corruption in Linux kernel - CVE-2026-89873
Published: September 17, 2026
Vulnerability identifier: #VU150413
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89873
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause an out-of-bounds access.
The vulnerability exists due to improper bounds checking in V4L2 HEVC SPS and EXT SPS RPS control validation when processing user-supplied HEVC controls. A local user can submit controls with excessive reference picture set or picture counts to cause an out-of-bounds access.
Affected software
Linux kernel
How to mitigate CVE-2026-89873
Install security update from vendor's repository.