CVE-2026-21734
Received Received - Intake
GPU Shader Compiler Out-of-Bounds Write Vulnerability

Publication date: 2026-06-26

Last updated on: 2026-06-26

Assigner: imaginationtech

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.
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Meta Information
Published
2026-06-26
Last Modified
2026-06-26
Generated
2026-06-26
AI Q&A
2026-06-26
EPSS Evaluated
N/A
NVD
CVE-2026-21734
EUVD
EUVD-2026-39785
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
imagination_technologies gpu_shader_compiler *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-823 The product performs pointer arithmetic on a valid pointer, but it uses an offset that can point outside of the intended range of valid memory locations for the resulting pointer.
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Executive Summary

This vulnerability occurs when a web page containing unusual GPU shader code is loaded into the GPU compiler process. The GPU shader compiler library can then experience an out-of-bounds write crash due to this unusual code, specifically triggered by an edge case involving a very small value in the shader code.

On certain platforms, if the GPU compiler process runs with system privileges, this out-of-bounds write can lead to a segmentation fault and potentially enable further exploits on the device.

Impact Analysis

The impact of this vulnerability includes the possibility of a crash in the GPU shader compiler process, which can cause instability or denial of service.

More critically, on platforms where the compiler process has system-level privileges, this vulnerability could be exploited to execute further attacks on the device, potentially compromising system security.

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