Bug 2492343 (CVE-2026-53054)

Summary: CVE-2026-53054 kernel: drm/msm: Fix VM_BIND UNMAP locking
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's Direct Rendering Manager (DRM) subsystem, specifically within the Qualcomm Adreno GPU (MSM) driver. An incorrect argument in the `VM_BIND UNMAP` locking mechanism meant that certain objects involved in unmapping operations were not consistently locked. This could potentially lead to unexpected system behavior or instability, particularly with non-shared buffer objects, impacting system reliability.
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Description OSIDB Bzimport 2026-06-24 18:06:52 UTC
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/