by Kastro
Paper/Archive/CVE-2026-21732

CVE-2026-21732

Imagination Technologies Graphics DDK — GPU DDK - libusc OOB write at ConvertSwitchToArrayLookupBP during WebGPU shader compilation

EPSS 0.3%CVSS 9.6
critical.is priorityof 100
33
CVSS 9.6 (ADP)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 22.6.226 × 204.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

A web page that contains unusual GPU shader code is loaded into the GPU compiler process and can trigger a write out-of-bounds write crash in the GPU shader compiler library. On certain platforms, when the compiler process has system privileges this could enable further exploits on the device. An edge case using a very large value in switch statements in GPU shader code can cause a segmentation fault in the GPU shader compiler due to an out-of-bounds write access.

Affected

ProductAffectedFixed inSource
Graphics DDK23.2 RTM–CNA
Graphics DDK24.1 RTM – 25.1 RTM–CNA

Scores by source

CISA ADP9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refimaginationtech.com/gpu-driver-vulnerabilities