CVE-2026-0001: Arm GPU Kernel Driver use-after-free in memory processing

CVE-2026-0001 · Severity: medium · CVSS 4.4 · Published 2026-09-08

Arm's GPU kernel drivers (Bifrost, Valhall, and 5th Gen architectures) contain a use-after-free vulnerability in GPU memory processing that allows a local user to access memory that has already been freed. An attacker could exploit this to read sensitive data, crash the GPU, or potentially execute code with GPU privileges on mobile devices and embedded systems using these drivers.

Technologies: Arm 5th Gen GPU Architecture Kernel Driver, Arm Bifrost GPU Kernel Driver, Arm Valhall GPU Kernel Driver. Vendors: Arm.

Quick answers

Is CVE-2026-0001 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-0001 being exploited in the wild.
How severe is CVE-2026-0001?
Medium severity, with a CVSS score of 4.4, published 8 September 2026.
Which products and versions are affected?
Arm 5th Gen GPU Architecture Kernel Driver r41p0 through r49p5, r50p0 through r54p3, r55p0; Arm Bifrost GPU Kernel Driver r41p0 through r49p5, r50p0 through r51p0, r54p1 through r54p2; Arm Valhall GPU Kernel Driver r41p0 through r49p5, r50p0 through r54p3, r55p0.
Is there a fix for CVE-2026-0001?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-0001 attacked?
It is attacked with local access, in device firmware.
Am I affected by CVE-2026-0001?
Check whether you run Arm 5th Gen GPU Architecture Kernel Driver, Arm Bifrost GPU Kernel Driver or Arm Valhall GPU Kernel Driver at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A use-after-free vulnerability exists in the GPU memory processing operations of Arm's kernel drivers across Bifrost, Valhall, and 5th Gen GPU architectures. The vulnerability allows a local non-privileged user process to trigger GPU memory operations that access already-freed memory regions. Attack preconditions require local access and the ability to invoke valid GPU processing operations. An attacker with these capabilities could read freed memory contents, cause denial of service through GPU crashes, or potentially achieve code execution depending on memory layout and exploitation techniques. Patches are available for affected driver versions.

Affected products

  • Arm Bifrost GPU Kernel Driver r41p0 through r49p5, r50p0 through r51p0, r54p1 through r54p2
  • Arm Valhall GPU Kernel Driver r41p0 through r49p5, r50p0 through r54p3, r55p0
  • Arm 5th Gen GPU Architecture Kernel Driver r41p0 through r49p5, r50p0 through r54p3, r55p0

Timeline

  • 2026-09-08: disclosed: CVE-2026-0001 published

References

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