Some methods on UNIX domain socket are not checked for null characters. ``` [vagrant@localhost ~]$ ls /tmp [vagrant@localhost ~]$ irb irb(main):001:0> require 'socket' => true irb(main):002:0> UNIXServer.open("/tmp/socket\0ruby") {|serv| irb(main):003:1* c = UNIXSocket.open("/tmp/socket\0sapphi…