CVE-2026-45197

GPU DDK - TOCTOU affecting psFWMemContext->uiPageCatBaseRegSet

State: Published
Severity: 2.5 Low
Published: Sep 4, 2026
Updated: Sep 8, 2026
Reserved: May 11, 2026

Description

Kernel software installed and running inside a Guest VM may post improper commands to the GPU Firmware to trigger a read and/or write data outside the Guest's virtualised GPU memory.

The firmware uses data provided by the Guest VM to set up accesses to memory. It validated this before use, but a TOCTOU bug was present which allowed the earlier check results to be invalidated.

Scores

CVSS	Score	Vector	Source
3.1	2.5 Low	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

Affected Products

Product	Versions
Graphics DDKImagination Technologies	1.18 RTM2Affected 23.2 RTM2Affected 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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