diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h
index 9462d6ae2f37..9619b9d35c9e 100644
--- a/include/net/sctp/user.h
+++ b/include/net/sctp/user.h
@@ -411,6 +411,7 @@ struct sctp_event_subscribe {
 	__u8 sctp_shutdown_event;
 	__u8 sctp_partial_delivery_event;
 	__u8 sctp_adaptation_layer_event;
+	__u8 sctp_authentication_event;
 };
 
 /*
@@ -587,7 +588,7 @@ struct sctp_authchunk {
  * endpoint requires the peer to use.
 */
 struct sctp_hmacalgo {
-	__u16		shmac_num_idents;
+	__u32		shmac_num_idents;
 	__u16		shmac_idents[];
 };
 
@@ -600,7 +601,7 @@ struct sctp_hmacalgo {
 struct sctp_authkey {
 	sctp_assoc_t	sca_assoc_id;
 	__u16		sca_keynumber;
-	__u16		sca_keylen;
+	__u16		sca_keylength;
 	__u8		sca_key[];
 };
 
@@ -693,8 +694,9 @@ struct sctp_status {
  * the peer requires to be received authenticated only.
  */
 struct sctp_authchunks {
-	sctp_assoc_t            gauth_assoc_id;
-	uint8_t                 gauth_chunks[];
+	sctp_assoc_t	gauth_assoc_id;
+	__u32		gauth_number_of_chunks;
+	uint8_t		gauth_chunks[];
 };
 
 /*
diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 8bb79f281774..675a5c3e68a6 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -838,11 +838,11 @@ int sctp_auth_set_key(struct sctp_endpoint *ep,
 	}
 
 	/* Create a new key data based on the info passed in */
-	key = sctp_auth_create_key(auth_key->sca_keylen, GFP_KERNEL);
+	key = sctp_auth_create_key(auth_key->sca_keylength, GFP_KERNEL);
 	if (!key)
 		goto nomem;
 
-	memcpy(key->data, &auth_key->sca_key[0], auth_key->sca_keylen);
+	memcpy(key->data, &auth_key->sca_key[0], auth_key->sca_keylength);
 
 	/* If we are replacing, remove the old keys data from the
 	 * key id.  If we are adding new key id, add it to the
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 4d7ec961ae1d..87f940587d5f 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -966,7 +966,7 @@ static struct inet6_protocol sctpv6_protocol = {
 	.flags        = INET6_PROTO_NOPOLICY | INET6_PROTO_FINAL,
 };
 
-static struct sctp_af sctp_ipv6_specific = {
+static struct sctp_af sctp_af_inet6 = {
 	.sa_family	   = AF_INET6,
 	.sctp_xmit	   = sctp_v6_xmit,
 	.setsockopt	   = ipv6_setsockopt,
@@ -998,7 +998,7 @@ static struct sctp_af sctp_ipv6_specific = {
 #endif
 };
 
-static struct sctp_pf sctp_pf_inet6_specific = {
+static struct sctp_pf sctp_pf_inet6 = {
 	.event_msgname = sctp_inet6_event_msgname,
 	.skb_msgname   = sctp_inet6_skb_msgname,
 	.af_supported  = sctp_inet6_af_supported,
@@ -1008,7 +1008,7 @@ static struct sctp_pf sctp_pf_inet6_specific = {
 	.supported_addrs = sctp_inet6_supported_addrs,
 	.create_accept_sk = sctp_v6_create_accept_sk,
 	.addr_v4map    = sctp_v6_addr_v4map,
-	.af            = &sctp_ipv6_specific,
+	.af            = &sctp_af_inet6,
 };
 
 /* Initialize IPv6 support and register with socket layer.  */
@@ -1017,10 +1017,10 @@ int sctp_v6_init(void)
 	int rc;
 
 	/* Register the SCTP specific PF_INET6 functions. */
-	sctp_register_pf(&sctp_pf_inet6_specific, PF_INET6);
+	sctp_register_pf(&sctp_pf_inet6, PF_INET6);
 
 	/* Register the SCTP specific AF_INET6 functions. */
-	sctp_register_af(&sctp_ipv6_specific);
+	sctp_register_af(&sctp_af_inet6);
 
 	rc = proto_register(&sctpv6_prot, 1);
 	if (rc)
@@ -1051,7 +1051,7 @@ void sctp_v6_exit(void)
 	inet6_unregister_protosw(&sctpv6_seqpacket_protosw);
 	inet6_unregister_protosw(&sctpv6_stream_protosw);
 	proto_unregister(&sctpv6_prot);
-	list_del(&sctp_ipv6_specific.list);
+	list_del(&sctp_af_inet6.list);
 }
 
 /* Unregister with inet6 layer. */
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 22a16571499c..688546dccd82 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -832,7 +832,7 @@ static inline int sctp_v4_xmit(struct sk_buff *skb,
 	return ip_queue_xmit(skb, ipfragok);
 }
 
-static struct sctp_af sctp_ipv4_specific;
+static struct sctp_af sctp_af_inet;
 
 static struct sctp_pf sctp_pf_inet = {
 	.event_msgname = sctp_inet_event_msgname,
@@ -844,7 +844,7 @@ static struct sctp_pf sctp_pf_inet = {
 	.supported_addrs = sctp_inet_supported_addrs,
 	.create_accept_sk = sctp_v4_create_accept_sk,
 	.addr_v4map	= sctp_v4_addr_v4map,
-	.af            = &sctp_ipv4_specific,
+	.af            = &sctp_af_inet
 };
 
 /* Notifier for inetaddr addition/deletion events.  */
@@ -906,7 +906,7 @@ static struct net_protocol sctp_protocol = {
 };
 
 /* IPv4 address related functions.  */
-static struct sctp_af sctp_ipv4_specific = {
+static struct sctp_af sctp_af_inet = {
 	.sa_family	   = AF_INET,
 	.sctp_xmit	   = sctp_v4_xmit,
 	.setsockopt	   = ip_setsockopt,
@@ -1192,7 +1192,7 @@ SCTP_STATIC __init int sctp_init(void)
 	sctp_sysctl_register();
 
 	INIT_LIST_HEAD(&sctp_address_families);
-	sctp_register_af(&sctp_ipv4_specific);
+	sctp_register_af(&sctp_af_inet);
 
 	status = proto_register(&sctp_prot, 1);
 	if (status)
@@ -1249,7 +1249,7 @@ err_v6_init:
 	proto_unregister(&sctp_prot);
 err_proto_register:
 	sctp_sysctl_unregister();
-	list_del(&sctp_ipv4_specific.list);
+	list_del(&sctp_af_inet.list);
 	free_pages((unsigned long)sctp_port_hashtable,
 		   get_order(sctp_port_hashsize *
 			     sizeof(struct sctp_bind_hashbucket)));
@@ -1299,7 +1299,7 @@ SCTP_STATIC __exit void sctp_exit(void)
 	inet_unregister_protosw(&sctp_seqpacket_protosw);
 
 	sctp_sysctl_unregister();
-	list_del(&sctp_ipv4_specific.list);
+	list_del(&sctp_af_inet.list);
 
 	free_pages((unsigned long)sctp_assoc_hashtable,
 		   get_order(sctp_assoc_hashsize *
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 44797ad88a05..939892691a26 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1964,7 +1964,7 @@ static int sctp_setsockopt_disable_fragments(struct sock *sk,
 static int sctp_setsockopt_events(struct sock *sk, char __user *optval,
 					int optlen)
 {
-	if (optlen != sizeof(struct sctp_event_subscribe))
+	if (optlen > sizeof(struct sctp_event_subscribe))
 		return -EINVAL;
 	if (copy_from_user(&sctp_sk(sk)->subscribe, optval, optlen))
 		return -EFAULT;
@@ -5070,6 +5070,7 @@ static int sctp_getsockopt_peer_auth_chunks(struct sock *sk, int len,
 	struct sctp_authchunks val;
 	struct sctp_association *asoc;
 	struct sctp_chunks_param *ch;
+	u32    num_chunks;
 	char __user *to;
 
 	if (len <= sizeof(struct sctp_authchunks))
@@ -5086,12 +5087,15 @@ static int sctp_getsockopt_peer_auth_chunks(struct sock *sk, int len,
 	ch = asoc->peer.peer_chunks;
 
 	/* See if the user provided enough room for all the data */
-	if (len < ntohs(ch->param_hdr.length))
+	num_chunks = ntohs(ch->param_hdr.length) - sizeof(sctp_paramhdr_t);
+	if (len < num_chunks)
 		return -EINVAL;
 
-	len = ntohs(ch->param_hdr.length);
+	len = num_chunks;
 	if (put_user(len, optlen))
 		return -EFAULT;
+	if (put_user(num_chunks, &p->gauth_number_of_chunks))
+		return -EFAULT;
 	if (copy_to_user(to, ch->chunks, len))
 		return -EFAULT;
 
@@ -5105,6 +5109,7 @@ static int sctp_getsockopt_local_auth_chunks(struct sock *sk, int len,
 	struct sctp_authchunks val;
 	struct sctp_association *asoc;
 	struct sctp_chunks_param *ch;
+	u32    num_chunks;
 	char __user *to;
 
 	if (len <= sizeof(struct sctp_authchunks))
@@ -5123,12 +5128,15 @@ static int sctp_getsockopt_local_auth_chunks(struct sock *sk, int len,
 	else
 		ch = sctp_sk(sk)->ep->auth_chunk_list;
 
-	if (len < ntohs(ch->param_hdr.length))
+	num_chunks = ntohs(ch->param_hdr.length) - sizeof(sctp_paramhdr_t);
+	if (len < num_chunks)
 		return -EINVAL;
 
-	len = ntohs(ch->param_hdr.length);
+	len = num_chunks;
 	if (put_user(len, optlen))
 		return -EFAULT;
+	if (put_user(num_chunks, &p->gauth_number_of_chunks))
+		return -EFAULT;
 	if (copy_to_user(to, ch->chunks, len))
 		return -EFAULT;
 
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index e27b11f18b7f..b43f1f110f87 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -206,7 +206,7 @@ struct sctp_ulpevent  *sctp_ulpevent_make_assoc_change(
 	 * This field is the total length of the notification data, including
 	 * the notification header.
 	 */
-	sac->sac_length = sizeof(struct sctp_assoc_change);
+	sac->sac_length = skb->len;
 
 	/* Socket Extensions for SCTP
 	 * 5.3.1.1 SCTP_ASSOC_CHANGE