CVE-2026-21734 (GCVE-0-2026-21734)

Vulnerability from cvelistv5 – Published: 2026-06-26 15:14 – Updated: 2026-06-26 19:13
VLAI
Title
GPU DDK - libusc OOB write at TreeRemove during WebGPU shader compilation
Summary
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 small value in GPU shader code can cause a segmentation fault in the GPU shader compiler due to am out-of-bounds write.
Severity
7.7 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 19:12 UTC
CWE
  • CWE-823 - Use of Out-of-range Pointer Offset (4.16)
Assigner
imaginationtech CNA under the mitre root
CNA scorecard D 55/100 over 36 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Imagination Technologies Graphics DDK Affected: 1.18 RTM (custom)
Affected: 23.2 RTM (custom)
Affected: 24.1 RTM , ≤ 24.2 RTM (custom)
Affected: 25.1 RTM , ≤ 25.3 RTM (custom)
Unaffected: 26.1 RTM (custom)
guessed Create a notification for this product.
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