Stack-based buffer overflow in the smc program in smcFanControl 2.1.2 allows local users to execute arbitrary code and gain privileges via a long -k option.
https://www.exploit-db.com/exploits/7088
https://exchange.xforce.ibmcloud.com/vulnerabilities/46551
http://www.vupen.com/english/advisories/2008/3126
http://www.macupdate.com/info.php/id/23049