CVE-2026-7639: GPU DDK - Page UAF read in PMMETA_PROTECT heap memory

Published Jul 10, 2026
·
Updated

Software installed and run as a non-privileged user may conduct a sequence of improper GPU system calls causing use after free, which helps in facilitating unprivileged memory access from a shader code.

Triggering failure path in the MMU mapping logic by a malicious code could lead to incomplete cleanup of an internal driver state, allowing for future unauthorized access to the contents of the physical memory.

Affected Software

5 affected components
GPU DDK GPU DDK
All of the following
Any of the following
Imaginationtech Ddk<26.1
Imaginationtech Ddk=26.1-rtm1
Any of the following
Google Android
Linux Linux kernel

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Compensating control

    Run affected GPU-related workloads only in trusted contexts (avoid allowing unprivileged/non-privileged users to execute sequences of GPU system calls that could trigger the described GPU Page UAF / incomplete cleanup leading to unauthorized physical memory access).

Event History

Jul 10, 2026
CVE Published
via MITRE·08:50 PM
Data Sourced
via MITRE·08:50 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Jul 16, 2026
Data Sourced
12:00 AM
SeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2026-7639?

CVE-2026-7639 has a high severity score of 7.8 according to CVSS 3.1.

2

How do I fix CVE-2026-7639?

To mitigate CVE-2026-7639, please ensure that you update to the latest version of the GPU DDK as soon as it becomes available.

3

What is the impact of CVE-2026-7639?

CVE-2026-7639 can lead to unprivileged memory access, potentially compromising system integrity and data confidentiality.

4

Who is affected by CVE-2026-7639?

Users of the GPU DDK who run software as non-privileged users are at risk of being affected by CVE-2026-7639.

5

What type of vulnerability is CVE-2026-7639?

CVE-2026-7639 is categorized as a 'Use After Free' vulnerability affecting the GPU DDK.

Company

Resources

Contact

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