SB2026081285 - Reachable assertion in Linux kernel amd amdgpu driver
Published: August 12, 2026
Security Bulletin ID
SB2026081285
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-2026-68430)
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 a reachable assertion in the amdgpu gfx8 fence emission logic when processing GPU fence operations. A local user can trigger the affected code path to cause a denial of service.
The issue results in a kernel crash.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2404600dca5c0979485c6f2d9c62bd356a98870a
- https://git.kernel.org/stable/c/84a1a8a952ab4b8c23c5dd1f2eea4049cb4914f5
- https://git.kernel.org/stable/c/ab05af6c345bc8460052c60de657ce6d4a2386f7
- https://git.kernel.org/stable/c/db85aa861b8214fa0d1d8405c01488f604a455a0
- https://git.kernel.org/stable/c/f70bd5235d9efc2ee2f70293eea51888c5f2a54d