Improper Check for Unusual or Exceptional Conditions in Linux kernel - CVE-2026-80786
Published: September 5, 2026
Vulnerability identifier: #VU147137
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80786
CWE-ID: CWE-754
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause inconsistent framebuffer console state.
The vulnerability exists due to improper state management in fb_set_var() callers when processing display mode changes through sysfs or driver code. A local user can invoke a display mode change to cause inconsistent framebuffer console state.
Affected software
Linux kernel
How to mitigate CVE-2026-80786
Install security update from vendor's repository.