diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index e3ebf04ddbd0..7cdd6bcddbc5 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -569,6 +569,8 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
 		 */
 		transport->cwnd = max(transport->cwnd/2,
 					 4*asoc->pathmtu);
+		/* RFC 4960 Errata 3.27.2: also adjust sshthresh */
+		transport->ssthresh = transport->cwnd;
 		break;
 	}