racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote attackers to cause a denial of service (crash) via crafted fragmented packets without a payload, which triggers a NULL pointer dereference.
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00789.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00746.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00725.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9624
https://exchange.xforce.ibmcloud.com/vulnerabilities/50412
http://www.vupen.com/english/advisories/2009/3184
http://www.ubuntu.com/usn/USN-785-1
http://www.securityfocus.com/bid/34765
http://www.redhat.com/support/errata/RHSA-2009-1036.html
http://www.openwall.com/lists/oss-security/2009/05/04/3
http://www.openwall.com/lists/oss-security/2009/04/29/6
http://www.mandriva.com/security/advisories?name=MDVSA-2009:112
http://www.debian.org/security/2009/dsa-1804
http://support.apple.com/kb/HT4298
http://support.apple.com/kb/HT3937
http://sourceforge.net/project/shownotes.php?group_id=74601&release_id=677611
http://security.gentoo.org/glsa/glsa-200905-03.xml
http://secunia.com/advisories/35685
http://secunia.com/advisories/35404
http://secunia.com/advisories/35212
http://secunia.com/advisories/35159
http://secunia.com/advisories/35153
http://secunia.com/advisories/35113
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
http://lists.apple.com/archives/security-announce/2010//Dec/msg00001.html
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705