CVE-2026-41156

GPU DDK - kernel<->fw CCB contains SYNC_PRIMITIVE_BLOCK firmware address without holding reference

State: Published
Severity: 7.7 High
Published: Jun 19, 2026
Updated: Jun 22, 2026
Reserved: Apr 17, 2026

Description

Software installed and run as a non-privileged user may conduct improper GPU system calls to cause mismanagement of resources creating a write use after free scenario.

A shared resource (memory page) managed by a CPU thread of control (driver) and accessed by a GPU thread of control (Firmware) can cause a write UAF when the CPU thread frees the resource before the GPU FW has finished accessing it.

Scores

CVSS	Score	Vector	Source
3.1	7.7 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free (4.15)

Affected Products

Product	Versions
Graphics DDKImagination Technologies	1.18 RTMAffected 23.2 RTMAffected 24.2 RTMAffected 25.1 RTM through 25.3 RTMAffected 26.1 RTMAffected 26.2 RTMNot affected

References

https://www.imaginationtech.com/gpu-driver-vulnerabilities/

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