CVE-2026-11891

Mali GPU Userspace Driver allows access to already freed memory

State: Published
Severity: 5.1 Medium
Published: Sep 8, 2026
Updated: Sep 10, 2026
Reserved: Jun 10, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	5.1 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
Valhall GPU Userspace DriverArm Ltd	r46p0 through r49p5Affected r50p0 through r54p3Affected r55p0Affected r56p0Not affected
Arm 5th Gen GPU Architecture Userspace DriverArm Ltd	r46p0 through r49p5Affected r50p0 through r54p3Affected r55p0Affected r56p0Not affected

References

https://support.arm.com/documentation/111552/1-0/?lang=en

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