CVE-2026-0001: Mali GPU Kernel Driver allows access to already freed memory
Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user process to perform valid GPU memory processing operations to access already freed memory.
This issue affects Bifrost GPU Kernel Driver: from r41p0 through r49p5, from r50p0 through r51p0, from r54p1 through r54p2; Valhall GPU Kernel Driver: from r41p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Kernel Driver: from r41p0 through r49p5, from r50p0 through r54p3, r55p0.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Arm Ltd Valhall GPU Kernel Driverto a version that resolves this vulnerability.Fixed in r56p0 - Upgrade
Upgrade
Arm 5th Gen GPU Architecture Kernel Driverto a version that resolves this vulnerability.Fixed in r56p0
Event History
Frequently Asked Questions
Which systems are affected?
Systems using the Bifrost driver in r41p0 through r49p5, r50p0 through r51p0, or r54p1 through r54p2 are affected. Systems using the Valhall or Arm 5th Gen GPU Architecture drivers in r41p0 through r49p5, r50p0 through r54p3, or r55p0 are affected.
What level of access does an attacker need?
An attacker needs the ability to run a local non-privileged user process. Exploitation involves performing valid GPU memory processing operations.
How can I determine whether a device is affected?
Identify the installed Arm GPU kernel driver family and its release version, then compare it with the affected version ranges. A match in any listed range indicates the driver is affected.