CVE-2026-11891CWE-416

CVE-2026-11891

Medium · published September 8, 2026

CVSS v3.1
5.1
EPSS
0%
Percentile
1.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00109 · 1.2th percentile
Weakness
CWE-416 · Use After Free
Published
2026-09-08T19:18Z
References (1)
https://support.arm.com/documentation/111552/1-0/?lang=en · [email protected]
EPSS history
Timeline
  • 10 SEP 03:16Z
    EPSS moved — → 0%
    epss
  • 08 SEP 14:21Z
    Mali GPU Userspace Driver allows access to already freed memory
    cvelistv5