Improper locking in Linux kernel - CVE-2026-53054
Published: June 25, 2026
Vulnerability identifier: #VU135286
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53054
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper locking in drm/msm vm_bind unmap handling when processing VM_BIND UNMAP operations for non-_NO_SHARE buffer objects. A local user can trigger a VM_BIND UNMAP operation to cause a denial of service.
The issue only manifests with non-_NO_SHARE buffer objects, because _NO_SHARE objects share a common reservation object with the VM that is always locked.
How to mitigate CVE-2026-53054
Install security update from vendor's repository.