SB20260812423 - Reachable assertion in Linux kernel amd amdgpu driver
Published: August 12, 2026
Security Bulletin ID
SB20260812423
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) Reachable assertion (CVE-ID: CVE-2026-68113)
CWE-ID: CWE-617 - Reachable Assertion
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 improper handling of assertion checks in drm/amdgpu gfx12 ring command emission routines when processing misaligned gpu or memory addresses. A local user can trigger code paths with improperly aligned addresses to cause a denial of service.
The issue can crash the kernel via reachable BUG_ON() conditions in multiple gfx12 amdgpu paths.
Remediation
Install update from vendor's website.