Mali GPU Userspace Driver allows access to already freed memory (CVE-2026-11891) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-11891

Mali GPU Userspace Driver allows access to already freed memory

Answer in brief

CVE-2026-11891 records a Unknown severity vulnerability in Mali GPU Userspace Driver allows access to already freed memory. The current sources do not mark it as known exploited. The current feed maps Arm Ltd/Arm 5th Gen GPU Architecture Userspace Driver (generic), Arm Ltd/Valhall GPU Userspace Driver (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 8, 2026Source checked Sep 8, 2026First seen by HOL Sep 8, 2026Material review Sep 8, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Arm Ltd/Arm 5th Gen GPU Architecture Userspace Driver (generic), Arm Ltd/Valhall GPU Userspace Driver (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Arm Ltd/Arm 5th Gen GPU Architecture Userspace Drivergeneric	r46p0 \|\| r50p0 \|\| r55p0	Not reported
Arm Ltd/Valhall GPU Userspace Drivergeneric	r46p0 \|\| r50p0 \|\| r55p0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Arm Ltd/Arm 5th Gen GPU Architecture Userspace Driver, Arm Ltd/Valhall GPU Userspace Driver.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Source referencesupport.arm.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.