Improper resource shutdown or release in Linux kernel - CVE-2026-53244
Published: June 26, 2026
Vulnerability identifier: #VU135504
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-53244
CWE-ID: CWE-404
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in nfsd4_create_file() when handling NFS file creation on exported filesystems that use ->atomic_create and an error is returned. A remote user can trigger a file creation operation that causes atomic_create() to return an error to cause a denial of service.
The issue can leave the parent directory locked because an error pointer is passed to end_creating().
How to mitigate CVE-2026-53244
Install security update from vendor's repository.