SB20260816272 - Improper Initialization in Linux kernel drm vc4 driver
Published: August 16, 2026
Security Bulletin ID
SB20260816272
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) Improper Initialization (CVE-ID: CVE-2026-74453)
CWE-ID: CWE-665 - Improper Initialization
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 initialization in the vc4 tile state data array handling when submitting crafted tile binning configurations. A local user can submit a crafted job that reuses stale tile state data to cause a denial of service.
The issue can result in invalid command streams, invalid primitive streams, and GPU hangs.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0e858422df2334165293ea742da9fbb2e51f2739
- https://git.kernel.org/stable/c/48a570c964d8e37d353381e4195106277e17f5cb
- https://git.kernel.org/stable/c/57667eb7548faaac396c6e39f3b4444dab5b097c
- https://git.kernel.org/stable/c/a75c8f365e209aa9bb927b0942a7840152d44892
- https://git.kernel.org/stable/c/f5802be65535f8818af7191159cf8c11f48ab2a2