Multiple buffer overflows in QNX Neutrino RTOS 6.2.0 allow local users to execute arbitrary code via a long first argument to the (1) su or (2) passwd commands.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24554
https://exchange.xforce.ibmcloud.com/vulnerabilities/24551
http://www.vupen.com/english/advisories/2006/0474
http://www.securityfocus.com/bid/16539
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=388
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=385