CVE-2026-45201

GPU DDK - Incorrect page size validation in PhysmemNewRamBackedPMR could lead to OOB read and/or write of arbitrary physical memory

State: Published
Severity: 7.8 High
Published: Aug 21, 2026
Updated: Aug 27, 2026
Reserved: May 11, 2026

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Description

Software installed and run as a non-privileged user may conduct improper GPU system calls to pass invalid log2 page size when allocating physical pages leading to OOB read and/or write due to improper validation of the said value.

Such crafted log2 page size could lead to 4K pages being treated as higher order pages and allowing read and/or write access to the memory beyond 4K threshold.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-1284 Improper Validation of Specified Quantity in Input

Affected Products

Product	Versions
Graphics DDKImagination Technologies	1.18 RTM2Not affected 23.2 RTM2Not affected 24.2 RTM2Affected 25.1 RTM2 through 25.3 RTMAffected 26.1 RTM1Affected 26.1 RTM2Not affected

References

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

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