source: http://www.securityfocus.com/bid/33352/info

QNX RTOS is prone to a local denial-of-service vulnerability.

Attackers can exploit this issue to cause a kernel panic, denying service to legitimate users.

QNX RTOS 6.4.0 is vulnerable; other versions may also be affected. 

http://www.exploit-db.com/sploits/32740.bin