CVE-2026-7477: 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 r44p0 through r49p4, from r50p0 through r51p0, from r54p1 through r54p2; Valhall GPU Kernel Driver: from r44p0 through r49p5, from r50p0 through r54p3; Arm 5th Gen GPU Architecture Kernel Driver: from r44p0 through r49p5, from r50p0 through r54p3, r55p0.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
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
Who can exploit this issue?
A local non-privileged user process can exploit the issue. The attacker needs the ability to run a process locally on a system using an affected Arm GPU kernel driver.
What must an attacker do to trigger the vulnerability?
The attacker must perform valid GPU memory processing operations. Those operations can be used to access memory that has already been freed.
Which driver release ranges are affected?
Affected Bifrost releases are r44p0 through r49p4, r50p0 through r51p0, and r54p1 through r54p2. Affected Valhall releases are r44p0 through r49p5 and r50p0 through r54p3; affected Arm 5th Gen GPU Architecture releases are r44p0 through r49p5, r50p0 through r54p3, and r55p0.