diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index b6a38af72e1b..f2977201f8fa 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -2807,6 +2807,12 @@ static int mptcp_disconnect(struct sock *sk, int flags)
 	struct mptcp_subflow_context *subflow;
 	struct mptcp_sock *msk = mptcp_sk(sk);
 
+	/* Deny disconnect if other threads are blocked in sk_wait_event()
+	 * or inet_wait_for_connect().
+	 */
+	if (sk->sk_wait_pending)
+		return -EBUSY;
+
 	mptcp_do_flush_join_list(msk);
 
 	mptcp_for_each_subflow(msk, subflow) {
@@ -2845,6 +2851,7 @@ struct sock *mptcp_sk_clone(const struct sock *sk,
 		inet_sk(nsk)->pinet6 = mptcp_inet6_sk(nsk);
 #endif
 
+	nsk->sk_wait_pending = 0;
 	__mptcp_init_sock(nsk);
 
 	msk = mptcp_sk(nsk);