SB2026092839 - Improper Check for Unusual or Exceptional Conditions in Linux kernel drm gud driver
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB2026092839
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-98148)
CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions
CVSSv4: 0 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows an attacker with physical access to trigger a kernel warning.
The vulnerability exists due to missing validation in gud_plane_add_properties when processing device-reported supported rotations. An attacker with physical access can provide a device rotation bitmask that omits GUD_ROTATION_0 to trigger a kernel warning.
Remediation
Install update from vendor's website.