The IPsec implementation in Linux kernel before 2.6.25 allows remote routers to cause a denial of service (crash) via a fragmented ESP packet in which the first fragment does not contain the entire ESP header and IV.
http://lists.opensuse.org/opensuse-security-announce/2008-06/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00002.html
http://marc.info/?l=linux-netdev&m=120372380411259&w=2
https://bugzilla.redhat.com/show_bug.cgi?id=404291
http://secunia.com/advisories/30112
http://secunia.com/advisories/30294
http://secunia.com/advisories/30818
http://secunia.com/advisories/30890
http://secunia.com/advisories/30962
http://secunia.com/advisories/31107
http://secunia.com/advisories/31551
http://secunia.com/advisories/31628
https://exchange.xforce.ibmcloud.com/vulnerabilities/42276
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10549
http://www.debian.org/security/2008/dsa-1630
http://www.redhat.com/support/errata/RHSA-2008-0237.html
http://www.redhat.com/support/errata/RHSA-2008-0275.html