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CVE-2026-9034— Mali GPU Userspace Driver allows access to already freed memory

Quick assessment

Affected
Arm Ltd Bifrost 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 Bifrost GPU Userspace Driver是英国ARM公司开源的一套GPU用户态驱动。 ARM Bifrost GPU Userspace Driver r42p0至r49p5版本、r50p0至r51p0版本、r54p1至r54p3版本，Arm Ltd Valhall GPU Userspace Driver r42p0至r49p5版本、r50p0至r54p3版本、r55p0版本，以及Arm Ltd Arm 5th Gen GPU Architecture Userspace Dri

AI Predicted 5.5 Difficulty: Moderate EPSS 0.11% · P1

Affected Version Matrix 11

VendorProduct Version RangeStatus
Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver r42p0≤ r49p5 affected
r50p0≤ r54p3 affected
r55p0 affected
r56p0 unaffected
Arm Ltd Bifrost GPU Userspace Driver r42p0≤ r49p5 affected
r50p0≤ r51p0 affected
r54p1≤ r54p3 affected
Arm Ltd Valhall GPU Userspace Driver r42p0≤ r49p5 affected
r50p0≤ r54p3 affected
r55p0 affected
r56p0 unaffected
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I. Basic Information for CVE-2026-9034

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 Bifrost GPU Userspace Driver, 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 Bifrost GPU Userspace Driver: from r42p0 through r49p5, from r50p0 through r51p0, from r54p1 through r54p3; Valhall GPU Userspace Driver: from r42p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Userspace Driver: from r42p0 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 Bifrost GPU Userspace Driver 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ARM Bifrost GPU Userspace Driver是英国ARM公司开源的一套GPU用户态驱动。 ARM Bifrost GPU Userspace Driver r42p0至r49p5版本、r50p0至r51p0版本、r54p1至r54p3版本，Arm Ltd Valhall GPU Userspace Driver r42p0至r49p5版本、r50p0至r54p3版本、r55p0版本，以及Arm Ltd Arm 5th Gen GPU Architecture Userspace Dri
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 Bifrost GPU Userspace Driver r42p0 ~ r49p5 -
Arm Ltd Valhall GPU Userspace Driver r42p0 ~ r49p5 -
Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver r42p0 ~ r49p5 -

II. Public POCs for CVE-2026-9034

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III. Intelligence Information for CVE-2026-9034

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Vendor Advisories for CVE-2026-9034 (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-2026-11891 Mali GPU Userspace Driver allows access to already freed memory
CVE-2026-9040 Mali GPU Kernel Driver allows denial of service or disclosure of sensitive information
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 product: Bifrost GPU Userspace Driver
Same vendor: Arm Ltd
Same weakness: CWE-416

V. Comments for CVE-2026-9034

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