CVE-2026-12387

Mali GPU Kernel Driver allows access to already freed memory

State: Published
Severity: 5.1 Medium
Published: Sep 8, 2026
Updated: Sep 10, 2026
Reserved: Jun 16, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.1 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
Bifrost GPU Kernel DriverArm Ltd	r41p0 through r49p5Affected r50p0 through r51p0Affected r54p1 through r54p2Affected
Valhall GPU Kernel DriverArm Ltd	r41p0 through r49p5Affected r50p0 through r54p3Affected r55p0Affected r56p0Not affected
Arm 5th Gen GPU Architecture Kernel DriverArm Ltd	r41p0 through r49p5Affected r50p0 through r54p3Affected r55p0Affected r56p0Not affected

References

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

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