The HZ module in the iconv implementation in FreeBSD 10.0 before p6 and NetBSD allows context-dependent attackers to cause a denial of service (NULL pointer dereference) via a crafted argument to the iconv_open function. NOTE: this issue was SPLIT per ADT2 due to different vulnerability types. CVE-2014-5384 is used for the NULL pointer dereference.
http://www.securitytracker.com/id/1030458
http://www.freebsd.org/security/advisories/FreeBSD-SA-14:15.iconv.asc
http://mail-index.netbsd.org/source-changes/2014/06/24/msg055822.html