CVE-2026-53054
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VM_BIND UNMAP Locking Issue in Linux Kernel

Publication date: 2026-06-24

Last updated on: 2026-07-21

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/msm: Fix VM_BIND UNMAP locking Wrong argument meant that the objs involved in UNMAP ops were not always getting locked. Since _NO_SHARE objs share a common resv with the VM (which is always locked) this would only show up with non-_NO_SHARE BOs. Patchwork: https://patchwork.freedesktop.org/patch/713898/

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Meta Information

Published
2026-06-24
Last Modified
2026-07-21
Generated
2026-08-04
AI Q&A
2026-06-24
EPSS Evaluated
2026-08-03
NVD
CVE-2026-53054
EUVD
EUVD-2026-38922

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.19 (inc) to 7.0.10 (exc)
linux linux_kernel From 6.17 (inc) to 6.18.33 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-667 The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

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Executive Summary

This vulnerability is in the Linux kernel's drm/msm component related to VM_BIND UNMAP locking.

The issue was caused by a wrong argument that meant the objects involved in UNMAP operations were not always properly locked.

Since _NO_SHARE objects share a common reservation with the VM (which is always locked), the problem only appeared with non-_NO_SHARE buffer objects.

Impact Analysis

This vulnerability in the Linux kernel's drm/msm component involves improper locking during VM_BIND UNMAP operations. Specifically, objects involved in UNMAP operations were not always properly locked due to a wrong argument, which could lead to potential issues in memory management or stability when dealing with non-_NO_SHARE buffer objects.

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