The Stream Control Transmission Protocol (sctp) implementation in the Linux kernel before 2.6.27 does not properly handle a protocol violation in which a parameter has an invalid length, which allows attackers to cause a denial of service (panic) via unspecified vectors, related to sctp_sf_violation_paramlen, sctp_sf_abort_violation, sctp_make_abort_violation, and incorrect data types in function calls.
http://www.ubuntu.com/usn/usn-679-1
http://www.securityfocus.com/bid/31848
http://www.redhat.com/support/errata/RHSA-2009-0009.html
http://www.openwall.com/lists/oss-security/2008/10/06/1
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27
http://www.debian.org/security/2008/dsa-1681
http://secunia.com/advisories/33586
http://secunia.com/advisories/32998
http://secunia.com/advisories/32918
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00010.html