The sctp_assoc_update function in net/sctp/associola.c in the Linux kernel through 3.15.8, when SCTP authentication is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by starting to establish an association between two endpoints immediately after an exchange of INIT and INIT ACK chunks to establish an earlier association between these endpoints in the opposite direction.
http://www.openwall.com/lists/oss-security/2014/07/26/1
https://bugzilla.redhat.com/show_bug.cgi?id=1122982
https://github.com/torvalds/linux/commit/1be9a950c646c9092fb3618197f7b6bfb50e82aa
http://secunia.com/advisories/59777
http://secunia.com/advisories/60564
http://rhn.redhat.com/errata/RHSA-2014-1083.html
http://www.ubuntu.com/usn/USN-2358-1
http://www.ubuntu.com/usn/USN-2334-1
http://www.ubuntu.com/usn/USN-2335-1
http://www.ubuntu.com/usn/USN-2359-1
http://secunia.com/advisories/60744
http://rhn.redhat.com/errata/RHSA-2014-1668.html
http://rhn.redhat.com/errata/RHSA-2014-1763.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html
http://secunia.com/advisories/62563
http://www.securitytracker.com/id/1030681
http://www.securityfocus.com/bid/68881
http://secunia.com/advisories/60545
http://secunia.com/advisories/60430