Description
Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel.



A TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but before use.
Published: 2026-07-10
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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

Mon, 13 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

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


Mon, 13 Jul 2026 14:45:00 +0000

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

Fri, 10 Jul 2026 21:15:00 +0000

Type Values Removed Values Added
Description Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel. A TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but before use.
Title GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU
Weaknesses CWE-367
References

Subscriptions

Imaginationtech Graphics Ddk
cve-icon MITRE

Status: PUBLISHED

Assigner: imaginationtech

Published:

Updated: 2026-07-13T18:55:12.679Z

Reserved: 2026-05-11T10:58:04.163Z

Link: CVE-2026-45203

cve-icon Vulnrichment

Updated: 2026-07-13T18:34:11.080Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-16T10:00:04Z

Weaknesses