Mali GPU Userspace Driver allows access to already freed memory

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-11891
StatePUBLISHED
AssignerArm
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-08 15:18:40 UTC
Updated2026-09-10 19:17:26 UTC
DescriptionUse 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.

Risk And Classification

Primary CVSS: v3.1 5.1 MEDIUM from ADP

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS: 0.001090000 probability, percentile 0.013960000 (date 2026-09-11)

Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED5.1MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.1MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Arm Ltd Valhall GPU Userspace Driver affected r46p0 r49p5 patch Not specified
CNA Arm Ltd Valhall GPU Userspace Driver affected r50p0 r54p3 patch Not specified
CNA Arm Ltd Valhall GPU Userspace Driver affected r55p0 patch Not specified
CNA Arm Ltd Valhall GPU Userspace Driver unaffected r56p0 patch Not specified
CNA Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver affected r46p0 r49p5 patch Not specified
CNA Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver affected r50p0 r54p3 patch Not specified
CNA Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver affected r55p0 patch Not specified
CNA Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver unaffected r56p0 patch Not specified

References

ReferenceSourceLinkTags
support.arm.com/documentation/111552/1-0 [email protected] support.arm.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Anymous (en)

Additional Advisory Data

Solutions

CNA: This issue has been fixed in the following versions: Valhall GPU Userspace Driver: r56p0; Arm 5th Gen GPU Architecture Userspace Driver: r56p0. Arm partners are recommended to upgrade to the latest applicable version as soon as possible.

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