CVE-2026-21736

GPU DDK - Insufficient permission check in PhysmemWrapExtMem() when write attribute support enabled

State: Published
Severity: 4.4 Medium
Published: Mar 9, 2026
Updated: Mar 9, 2026
Reserved: Jan 5, 2026

Description

Software installed and run as a non-privileged user may conduct improper GPU system calls to gain write permission to read-only wrapped user-mode memory.

This is caused by improper handling of the memory protections for the user-mode wrapped memory resource.

Scores

CVSS	Score	Vector	Source
3.1	4.4 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	CISA-ADP

Weaknesses

CWE-280 Improper Handling of Insufficient Permissions or Privileges

Affected Products

Product	Versions
Graphics DDKImagination Technologies	1.17 RTMAffected 1.18 RTMAffected 23.2 RTMAffected 24.1 RTM through 25.1 RTMAffected 25.2 RTM through 25.3 RTMNot affected 26.1 RTMNot affected

References

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

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