firewalls might let some TCP flags combinations pass (e.g. all with RST flag set) and the OS (e.g. Linux) stack would in turn accept a TCP session it might not have accepted otherwise.

Race condition in the recursive (1) directory deletion and (2) directory move in GNU File Utilities (fileutils) 4.1 and earlier allows local users to delete directories as the user running fileutils by moving a low-level directory to a higher level as it is being deleted, which causes fileutils to chdir to a ".." directory that is higher than expected, possibly up to the root file system.

Jakub Wilk found that a2ps, a tool to convert text and other types of files to PostScript, insecurely used a temporary file in spy_user(). A local attacker could use this flaw to perform a symbolic link attack to modify an arbitrary file accessible to the user running a2ps.