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

Severity: medium (CVSS 5.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-08 · updated 2026-09-10
Weakness: CWE-416

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

Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver: from r46p0 through r49p5; from r50p0 through r54p3; r55p0
Arm Ltd Valhall GPU Userspace Driver: from r46p0 through r49p5; from r50p0 through r54p3; r55p0

References

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

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