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OpenAdvisories
High · 7.8 CVE-2026-45203 EUVD-2026-43043GHSA-vf2q-w6vq-3hq8

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

Published Jul 10, 2026 · Updated Jul 13, 2026 · Assigned by imaginationtech

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.

Affected products

VendorProductAffectedFixed
Imagination Technologies Graphics DDK 1.18 RTM2, 23.2 RTM2, 24.2 RTM2, 25.1 RTM2 – ≤ 25.3 RTM, 26.1 RTM1 26.1 RTM2

Advisories 1

References