In the Linux kernel, the following vulnerability has been resolved:  smb: client: Fix refcount leak for cifssbtlink  Fix three refcount inconsistency issues related to cifs_sb_tlink.  Comments for cifs_sb_tlink state that cifs_put_tlink() needs to be called after successful calls to cifs_sb_tlink(). Three calls fail to update refcount accordingly, leading to possible resource leaks.