What’s Vulnerable › Vulnerabilities
CVE-2026-45203: GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-10 · updated 2026-10-25
- Weakness: CWE-367
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
- Imagination Technologies Graphics DDK: before 26.1; 26.1-rtm1 — fixed in 26.1
How to fix
Upgrade to a fixed version: Imagination Technologies Graphics DDK 26.1. Check the vendor advisory for mitigations.
References
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