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.
Published: 2026-09-04
Score: 2.5 Low
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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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

Subscriptions

Imaginationtech Graphics Ddk
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