SB20260812155 - Deadlock in Linux kernel display amdgpu_dm driver
Published: August 12, 2026
Security Bulletin ID
SB20260812155
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Deadlock (CVE-ID: CVE-2026-68364)
CWE-ID: CWE-833 - Deadlock
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a deadlock in the amdgpu display manager ISM disable path when handling suspend and resume while ISM delayed work is in flight. A local user can trigger suspend or resume activity to cause a denial of service.
The issue can cause a system hang while video is playing.
Remediation
Install update from vendor's website.