Vulnerability · Published Sep 8, 2026 · Assigned by Arm
CVE-2026-11891Mali GPU Userspace Driver allows access to already freed memory
Medium 5.1
In plain English
A medium-severity use-after-free in Arm 5th Gen GPU Architecture Userspace Driver from Arm Ltd. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Arm Ltd | Valhall GPU Userspace Driver | r46p0 – through r49p5r50p0 – through r54p3r55p0 |
| Arm Ltd | Arm 5th Gen GPU Architecture Userspace Driver | r46p0 – through r49p5r50p0 – through r54p3r55p0 |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N