CVE-2026-45203

GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU

At a glance

Severity: HIGH 7.8
EPSS: EPSS 0.13 % · percentile 2 (2026-10-27)
State: PUBLISHED
Published: 2026-07-10
Updated: 2026-07-13
Assigner: imaginationtech
NVD status: Analyzed

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CISA-ADP
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

CWE-367

European references

ENISA EUVD · EUVD-2026-43043
GCVE · GCVE-0-2026-45203

CERT-FR advisories

CERTFR-2026-AVI-1158 — Multiples vulnérabilités dans Google Android · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:imaginationtech:ddk:*:*:*:*:*:*:*:* < 26.1
cpe:2.3:a:imaginationtech:ddk:26.1:rtm1:*:*:*:*:*:*

Affected products

Product	Versions
Imagination Technologies · Graphics DDK	affected 1.18 RTM2 ; affected 23.2 RTM2 ; affected 24.2 RTM2 ; affected 25.1 RTM2 ≤ 25.3 RTM ; affected 26.1 RTM1 ; unaffected 26.1 RTM2

References

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

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD