CVE-2026-21732 (GCVE-0-2026-21732)
Vulnerability from cvelistv5 – Published: 2026-03-20 22:48 – Updated: 2026-03-23 15:03
VLAI?
Title
GPU DDK - libusc OOB write at ConvertSwitchToArrayLookupBP 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 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.
Severity ?
9.6 (Critical)
CWE
- CWE-823 - Use of Out-of-range Pointer Offset (4.16)
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Imagination Technologies | Graphics DDK |
Unaffected:
1.17 RTM
(custom)
Unaffected: 1.18 RTM (custom) Affected: 23.2 RTM (custom) Affected: 24.1 RTM , ≤ 25.1 RTM (custom) Unaffected: 25.2 RTM (custom) |
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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