diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 2fc0a92caa78696284c1db90cdb1ac7b4dc45913..b2ffab62a2295f0d5f1cd5c661a76123d5a34710 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -972,6 +972,7 @@ static int __sctp_connect(struct sock* sk,
 	int walk_size = 0;
 	union sctp_addr *sa_addr;
 	void *addr_buf;
+	unsigned short port;
 
 	sp = sctp_sk(sk);
 	ep = sp->ep;
@@ -992,6 +993,7 @@ static int __sctp_connect(struct sock* sk,
 	while (walk_size < addrs_size) {
 		sa_addr = (union sctp_addr *)addr_buf;
 		af = sctp_get_af_specific(sa_addr->sa.sa_family);
+		port = ntohs(sa_addr->v4.sin_port);
 
 		/* If the address family is not supported or if this address
 		 * causes the address buffer to overflow return EINVAL.
@@ -1005,6 +1007,12 @@ static int __sctp_connect(struct sock* sk,
 		if (err)
 			goto out_free;
 
+		/* Make sure the destination port is correctly set
+		 * in all addresses.
+		 */
+		if (asoc && asoc->peer.port && asoc->peer.port != port)
+			goto out_free;
+
 		memcpy(&to, sa_addr, af->sockaddr_len);
 
 		/* Check if there already is a matching association on the