CVE-2026-64108 cifs: Fix busy dentry used after unmounting

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix busy dentry used after unmounting Since commit 340cea84f691c "cifs: open files should not hold ref on superblock", cifs file only holds the dentry refcnt, the cifs file close workcfile-deferred could be executed after...

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...

CVE-2024-53176

The CVE covers a race in the Linux kernel SMB client (CIFS) during unmount: when unmounting, cached dentries may not be dropped due to racing with cached_dir operations, causing busy inodes and kernel BUGs. The fix introduces queued work in cfid_put_wq to drop dentries and flush it via close_all_...