source: https://www.securityfocus.com/bid/2711/info

A heap overflow vulnerability exists in the 'man' system manual pager program.

The vulnerability exists due to a length check error when the -S option is given. As a result, it may be possible for a local user to execute arbitrary code with group 'man' privileges. 

https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/20843.tar.gz