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

Quick assessment

Affected
Arm Ltd Valhall GPU Userspace Driver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ARM Valhall GPU Userspace Driver是英国ARM公司开源的一套GPU用户态驱动。 ARM Valhall GPU Userspace Driver存在资源管理错误漏洞，该漏洞源于释放后重用，可能导致非特权用户进程通过WebGL或WebGPU执行有效的GPU处理操作访问已释放的内存。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.11% · P1

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

VendorProduct Version RangeStatus
Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver r46p0≤ r49p5 affected
r50p0≤ r54p3 affected
r55p0 affected
r56p0 unaffected
Arm Ltd Valhall GPU Userspace Driver r46p0≤ r49p5 affected
r50p0≤ r54p3 affected
r55p0 affected
r56p0 unaffected
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I. Basic Information for CVE-2026-11891

Vulnerability Information
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Vulnerability Title
Mali GPU Userspace Driver allows access to already freed memory
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
ARM Valhall GPU Userspace Driver 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ARM Valhall GPU Userspace Driver是英国ARM公司开源的一套GPU用户态驱动。 ARM Valhall GPU Userspace Driver存在资源管理错误漏洞，该漏洞源于释放后重用，可能导致非特权用户进程通过WebGL或WebGPU执行有效的GPU处理操作访问已释放的内存。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Arm Ltd Valhall GPU Userspace Driver r46p0 ~ r49p5 -
Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver r46p0 ~ r49p5 -

II. Public POCs for CVE-2026-11891

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III. Intelligence Information for CVE-2026-11891

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Vendor Advisories for CVE-2026-11891 (1)

Same Patch Batch · Arm Ltd · 2026-09-08 · 10 CVEs total

CVE-2026-0001 Mali GPU Kernel Driver allows access to already freed memory
CVE-2026-7477 Mali GPU Kernel Driver allows access to already freed memory
CVE-2026-7476 Mali GPU Kernel Driver allows access to already freed memory
CVE-2026-0860 Mali GPU Kernel Driver allows access to sensitive kernel information
CVE-2026-9040 Mali GPU Kernel Driver allows denial of service or disclosure of sensitive information
CVE-2026-9034 Mali GPU Userspace Driver allows access to already freed memory
CVE-2026-12285 Mali GPU Kernel Driver allows access to already freed memory
CVE-2026-12387 Mali GPU Kernel Driver allows access to already freed memory
CVE-2026-5729 Mali GPU Kernel Driver allows access to already freed memory

IV. Related Vulnerabilities

Same vendor: Arm Ltd
Same weakness: CWE-416

V. Comments for CVE-2026-11891

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