CVE-2026-21734

GPU DDK - libusc OOB write at TreeRemove during WebGPU shader compilation

At a glance

Severity
HIGH 7.7
EPSS
EPSS 0.16 % · percentile 5 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
imaginationtech
NVD status
Analyzed

Description

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.

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.7CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HCISA-ADP
CVSS 3.1HIGH 7.7CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Imagination Technologies · Graphics DDKaffected 1.18 RTM ; affected 23.2 RTM ; affected 24.1 RTM ≤ 24.2 RTM ; affected 25.1 RTM ≤ 25.3 RTM ; unaffected 26.1 RTM

References

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD