CVE-2016-10197
The search_make_new function in evdns.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (out-of-bounds read) via an empty hostname.
Date published : 2017-03-15
http://www.securityfocus.com/bid/96014
https://github.com/libevent/libevent/blob/release-2.1.6-beta/ChangeLog