Unspecified vulnerability in Serial line sniffer (aka slsnif) 0.4.4 allows local users to gain privileges via a long value of the HOME environment variable, possibly because of a buffer overflow.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24082
http://www.vupen.com/english/advisories/2006/0212
http://www.securityfocus.com/archive/1/421583/100/0/threaded