pyxtrlock before 0.1 uses an incorrect variable name, which allows physically proximate attackers to bypass the lock screen via multiple failed authentication attempts, which trigger a crash.Referenceshttp://seclists.org/oss-sec/2013/q4/109https://github.com/leonnnn/pyxtrlock/blob/master/CHANGELOGhttps://github.com/leonnnn/pyxtrlock/issues/8