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.

Project Subscriptions

Vendors Products
Imaginationtech Subscribe
Graphics Ddk Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 08 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 2.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 04 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Imaginationtech
Imaginationtech graphics Ddk
Vendors & Products Imaginationtech
Imaginationtech graphics Ddk

Fri, 04 Sep 2026 02:00:00 +0000

Type Values Removed Values Added
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.
Title GPU DDK - TOCTOU affecting psFWMemContext->uiPageCatBaseRegSet
Weaknesses CWE-367
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: imaginationtech

Published:

Updated: 2026-09-08T14:29:16.404Z

Reserved: 2026-05-11T10:58:04.162Z

Link: CVE-2026-45197

cve-icon Vulnrichment

Updated: 2026-09-08T14:29:08.009Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-04T02:17:19.003

Modified: 2026-09-08T15:28:33.090

Link: CVE-2026-45197

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-08T16:45:17Z

Weaknesses