CVE-2026-11891
Medium
Description
Use After Free vulnerability in Arm Ltd Valhall GPU Userspace Driver, Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver allows a non-privileged user process to perform valid GPU processing operations, including via WebGL or WebGPU, to access already freed memory. This issue affects Valhall GPU Userspace Driver: from r46p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Userspace Driver: from r46p0 through r49p5, from r50p0 through r54p3, r55p0.
SeverityMedium
CVSS5.1
Exploit probability—
ProductValhall GPU Userspace Driver
PublishedSep 8, 2026
First seenSep 8, 2026
Weakness typeCWE-416Use after free
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Arm Ltd Valhall GPU Userspace Driver | r46p0 ≤ v ≤ r49p5, r50p0 ≤ v ≤ r54p3, r55p0 | — |
| Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver | r46p0 ≤ v ≤ r49p5, r50p0 ≤ v ≤ r54p3, r55p0 | — |
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