GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU
Summary
| CVE | CVE-2026-45203 |
|---|---|
| State | PUBLISHED |
| Assigner | imaginationtech |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-10 21:16:54 UTC |
| Updated | 2026-07-10 21:16:54 UTC |
| 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. |
Risk And Classification
EPSS: 0.001160000 probability, percentile 0.018910000 (date 2026-07-12)
Problem Types: CWE-367 | CWE-367 CWE - CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition (4.20)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Imagination Technologies | Graphics DDK | affected 1.18 RTM2 custom | Linux, Android |
| CNA | Imagination Technologies | Graphics DDK | affected 23.2 RTM2 custom | Linux, Android |
| CNA | Imagination Technologies | Graphics DDK | affected 24.2 RTM2 custom | Linux, Android |
| CNA | Imagination Technologies | Graphics DDK | affected 25.1 RTM2 25.3 RTM custom | Linux, Android |
| CNA | Imagination Technologies | Graphics DDK | affected 26.1 RTM1 custom | Linux, Android |
| CNA | Imagination Technologies | Graphics DDK | unaffected 26.1 RTM2 custom | Linux, Android |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.imaginationtech.com/gpu-driver-vulnerabilities | 367425dc-4d06-4041-9650-c2dc6aaa27ce | www.imaginationtech.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.