GPU Memory Arbitrary Write in Kernel

Publication date: 2026-06-01

Last updated on: 2026-08-12

Assigner: imaginationtech

Description

Kernel software installed and running inside a Guest/Host VM may post improper commands to the GPU Firmware to trigger a write of data outside the intended GPU memory. A logic error in the address translation allowed a compromised Host (Kernel) to perform arbitrary writes to firmware memory.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-01

Last Modified

2026-08-12

Generated

2026-08-21

AI Q&A

2026-06-01

EPSS Evaluated

2026-08-19

NVD

CVE-2026-34193

EUVD

EUVD-2026-33627

Affected Vendors & Products

Vendor	Product	Version / Range
imaginationtech	ddk	26.1
imaginationtech	ddk	to 26.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

Executive Summary

This vulnerability involves kernel software running inside a Guest or Host virtual machine that can send improper commands to the GPU firmware. Due to a logic error in address translation, a compromised Host kernel can perform arbitrary writes to the GPU firmware memory, writing data outside the intended GPU memory area.

Impact Analysis

The vulnerability allows a compromised Host kernel to write arbitrary data to GPU firmware memory. This could lead to unauthorized modification of firmware, potentially causing system instability, security breaches, or enabling further attacks by corrupting GPU operations.

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