CVE-2026-64108

A flaw was found in the Linux kernel's Common Internet File System (CIFS) component. This vulnerability occurs when a CIFS file's close operation is executed after the filesystem has been unmounted, leading to a directory entry (dentry) remaining in use. This improper resource management can trigger a system warning and potentially lead to system instability or a denial of service (DoS) condition, where legitimate users may be unable to access system resources.