Medium severity · published Sep 8, 2026
CVE-2026-11891
Mali GPU Userspace Driver allows access to already freed memory
5.1
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A5
Arm 5th Gen GPU Architecture Userspace Driver · Arm Ltd
r46p0 through r49p5; r50p0 through r54p3; r55p0 · source: vendor
VG
Valhall GPU Userspace Driver · Arm Ltd
r46p0 through r49p5; r50p0 through r54p3; r55p0 · source: vendor
Affected product
A5
Arm 5th Gen GPU Architecture Userspace Driver
Arm Ltd
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-11891
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-11891
support.arm.com
https://support.arm.com/documentation/111552/1-0/?lang=en
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