CVE-2026-45203CWE-367

CVE-2026-45203

High · published July 11, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
2.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00125 · 2.0th percentile
Weakness
CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition
Published
2026-07-11T01:16Z
Affected products (2)
ProductVersionsFixed in
imaginationtech/ddk< 26.126.1
imaginationtech/ddkall versions—
References (1)
https://www.imaginationtech.com/gpu-driver-vulnerabilities/ · 367425dc-4d06-4041-9650-c2dc6aaa27ce
EPSS history
Timeline
  • 10 JUL 20:57Z
    GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU
    cvelistv5