racoon/gssapi.c in IPsec-Tools 0.8.2 allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon crash) via a series of crafted UDP requests.
https://support.f5.com/csp/article/K05013313
http://www.ubuntu.com/usn/USN-2623-1
http://www.securitytracker.com/id/1032397
http://www.securityfocus.com/bid/74739
http://www.openwall.com/lists/oss-security/2015/05/21/11
http://www.debian.org/security/2015/dsa-3272
http://packetstormsecurity.com/files/131992/IPsec-Tools-0.8.2-Denial-Of-Service.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159549.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159482.html