The sctp_association_free function in net/sctp/associola.c in the Linux kernel before 3.15.2 does not properly manage a certain backlog value, which allows remote attackers to cause a denial of service (socket outage) via a crafted SCTP packet.
http://linux.oracle.com/errata/ELSA-2014-3068.html
http://linux.oracle.com/errata/ELSA-2014-3069.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
https://bugzilla.redhat.com/show_bug.cgi?id=1113967
http://secunia.com/advisories/59777
http://secunia.com/advisories/59790
http://secunia.com/advisories/60564
http://secunia.com/advisories/60596
https://github.com/torvalds/linux/commit/d3217b15a19a4779c39b212358a5c71d725822ee
http://www.debian.org/security/2014/dsa-2992
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.2
http://www.openwall.com/lists/oss-security/2014/06/27/11