CVE-2026-11891 — Mali GPU Userspace Driver allows access to already freed memory

Description (CNA)

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 (CNA)

Vendor / product	Versions
Arm Ltd / Valhall GPU Userspace Driver	affected r46p0 through r49p5; affected r50p0 through r54p3; affected r55p0; unaffected r56p0
Arm Ltd / Arm 5th Gen GPU Architecture Userspace Driver	affected r46p0 through r49p5; affected r50p0 through r54p3; affected r55p0; unaffected r56p0

CWE

CWE-416

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.