CVE-2026-45203 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Imaginationtech	Graphics Ddk

No data.

No data.

References

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

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

MITRE

Status: PUBLISHED

Assigner: imaginationtech

Published: 2026-07-10T20:57:19.733Z

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

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

Link: CVE-2026-45203

Vulnrichment

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

NVD

No data.

Redhat

No data.

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