kernel: smb: During unmount, ensure all cached dir instances drop their dentry

A flaw was found in the Linux kernel's SMB/CIFS client. A race condition can occur during unmount operations when closing cached directories while concurrent background directory cleanup or server reconnection tasks are underway. This timing error prevents cached directory entries from being...

UBUNTU-CVE-2024-53176

In the Linux kernel, the following vulnerability has been resolved: smb: During unmount, ensure all cached dir instances drop their dentry The unmount process cifskillsb calling closeallcacheddirs can race with various cached directory operations, which ultimately results in dentries not being...