CVE-2026-45203 — GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU
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 hos…
Published: 2026-07-10 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7