hexified path in cwd audit message if dir no longer exists

Redhat es4 x86 monoproc Kernel 2.6.9-34.EL Audit 1.0.12-1.EL4 Occasiaonally I get a CWD audit message that has a hexified path in it. Like this $1 = "audit(1178324383.479:1566): cwd=2F70726F632F35373336202864656C6574656429\000 This is "/proc/5736" The message is coming from a shell process whose current dir is /proc/5736 and 5736 exited The cwd path contains junk after the "6" character - so audit unstrusted string has hexified it I have not tried with real dirs Bug?