Graphviz, a collection of tools for the manipulation and layout of graphs, was recently reported to be affected by a buffer overflow vulnerability, which seem to have introduced in the fix for CVE-2014-0978.
References: http://seclists.org/oss-sec/2014/q1/46
Commit: https://github.com/ellson/graphviz/commit/d266bb2b4154d11c27252b56d86963aef4434750