CVE-2026-7476: Arm Bifrost GPU Kernel Driver use-after-free vulnerability

CVE-2026-7476 · Severity: high · CVSS 7.8 · Published 2026-09-08

Arm's GPU kernel drivers contain a use-after-free vulnerability that allows a local attacker without elevated privileges to access memory after it has been freed. This could enable the attacker to crash the GPU subsystem, leak sensitive data from GPU memory, or potentially execute arbitrary code with GPU-level privileges, disrupting device performance or exposing user data.

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

Quick answers

Is CVE-2026-7476 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-7476 being exploited in the wild.
How severe is CVE-2026-7476?
High severity, with a CVSS score of 7.8, published 8 September 2026.
Which products and versions are affected?
Arm 5th Gen GPU Architecture Kernel Driver r49p3 through r49p5, r51p0 through r54p3, r55p0; Arm Bifrost GPU Kernel Driver r49p3 through r49p5, r51p0, r54p1 through r54p2; Arm Valhall GPU Kernel Driver r49p3 through r49p5, r51p0 through r54p3, r55p0.
Is there a fix for CVE-2026-7476?
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-2026-7476 attacked?
It is attacked with local access, in device firmware.
Am I affected by CVE-2026-7476?
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

This is a use-after-free vulnerability in memory management within Arm's GPU kernel drivers (Bifrost, Valhall, and 5th Gen architectures). The vulnerability occurs when a local non-privileged process performs improper GPU memory processing operations, resulting in access to freed memory regions. The attack vector is local with no authentication required. An attacker can exploit this to read/write freed GPU memory, potentially leading to information disclosure, denial of service, or privilege escalation within the GPU execution context. Patches are available for affected driver versions.

Affected products

  • Arm Bifrost GPU Kernel Driver r49p3 through r49p5, r51p0, r54p1 through r54p2
  • Arm Valhall GPU Kernel Driver r49p3 through r49p5, r51p0 through r54p3, r55p0
  • Arm 5th Gen GPU Architecture Kernel Driver r49p3 through r49p5, r51p0 through r54p3, r55p0

Timeline

  • 2026-09-08: disclosed

References

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