--- /dev/null
+From 8c640bd0c68201dd0d71b78a07bb224973580ad3 Mon Sep 17 00:00:00 2001
+From: Patrick McHardy <kaber@trash.net>
+Date: Tue, 5 Jun 2007 14:14:22 +0200
+Subject: NETFILTER: {ip, nf}_conntrack_sctp: fix remotely triggerable NULL ptr dereference (CVE-2007-2876)
+
+When creating a new connection by sending an unknown chunk type, we
+don't transition to a valid state, causing a NULL pointer dereference in
+sctp_packet when accessing sctp_timeouts[SCTP_CONNTRACK_NONE].
+
+Fix by don't creating new conntrack entry if initial state is invalid.
+
+Noticed by Vilmos Nebehaj <vilmos.nebehaj@ramsys.hu>
+
+CC: Kiran Kumar Immidi <immidi_kiran@yahoo.com>
+Cc: David Miller <davem@davemloft.net>
+Signed-off-by: Patrick McHardy <kaber@trash.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
+Signed-off-by: Chris Wright <chrisw@sous-sol.org>
+
+---
+ net/netfilter/nf_conntrack_proto_sctp.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/net/netfilter/nf_conntrack_proto_sctp.c
++++ b/net/netfilter/nf_conntrack_proto_sctp.c
+@@ -460,7 +460,8 @@ static int sctp_new(struct nf_conn *conn
+ SCTP_CONNTRACK_NONE, sch->type);
+
+ /* Invalid: delete conntrack */
+- if (newconntrack == SCTP_CONNTRACK_MAX) {
++ if (newconntrack == SCTP_CONNTRACK_NONE ||
++ newconntrack == SCTP_CONNTRACK_MAX) {
+ DEBUGP("nf_conntrack_sctp: invalid new deleting.\n");
+ return 0;
+ }