A public disclosure of a heap overflow in a regex C library originally written by Henry Spencer, which appears to be embedded in the code base of several projects. https://guidovranken.wordpress.com/2015/02/04/full-disclosure-heap-overflow-in-h-spencers-regex-library-on-32-bit-systems/ http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2305