Vulnerability Development: problem in off by one overflow

[Breno Pinto <breno () secforum com br>]

Hi,

I have problem to exploit an off by one vulnerability. When i overwrite ebp with some data and i´t point to my NOPS, i 
receive an SIGSEGV message.

SIGSEGV message in 0x90909090 ??

I´m using red hat 7.3 and gcc 2.95.

Anybody knows why 0x90909090 broke my exploitation ?

Thanks


Breno