SB20260812289 - Reachable assertion in Linux kernel amd amdgpu driver
Published: August 12, 2026
Security Bulletin ID
SB20260812289
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-2026-68251)
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 kernel assertion in sdma_v6_0_ring_emit_fence() in the amdgpu sdma v6.0 driver when processing a fence address with the low two bits set. A local user can trigger the vulnerable code path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2eb06c88426b6c8de602c608959f3a56ac51861e
- https://git.kernel.org/stable/c/51fd52087165180967cf7d5ee99badee7e172ea0
- https://git.kernel.org/stable/c/9df8a7f09e305249872b536555793b28e77b7de9
- https://git.kernel.org/stable/c/e7f31c9a61533062a704f90b9f63064045249693
- https://git.kernel.org/stable/c/ec42c96c322e5cc48099ab5e67b5cbe236cb1949