SB2026050611 - Improper input validation in Linux kernel drm vc4 driver
Published: May 6, 2026
Security Bulletin ID
SB2026050611
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 input validation (CVE-ID: CVE-2026-43072)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in vc4 drm driver interrupt handling when initializing platform interrupts by name. A local user can trigger an error condition that causes a negative IRQ value to be used to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0185e0494a561edfc482507f9de89c2ad798b33d
- https://git.kernel.org/stable/c/0c1b117f7ba46fb8f6ebc5e0bfe5b58568c301ba
- https://git.kernel.org/stable/c/63c11b19cdc154fa848a6c3b535bfb1dc7b60378
- https://git.kernel.org/stable/c/9c10b83a004442c93d7a484c3d221a06a45821e1
- https://git.kernel.org/stable/c/e597a809a2b97e927060ba182f58eb3e6101bc70
- https://git.kernel.org/stable/c/ef2ee9db13b68c5e332b77c0a7108a2d4d56e114