diff --git a/net/tipc/link.c b/net/tipc/link.c
index bd28ac7f2195aa..0d2ee4eb131f54 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1579,13 +1579,16 @@ static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb,
 	u16 peers_tol = msg_link_tolerance(hdr);
 	u16 peers_prio = msg_linkprio(hdr);
 	u16 rcv_nxt = l->rcv_nxt;
-	u16 dlen = msg_data_sz(hdr);
+	u32 dlen = msg_data_sz(hdr);
 	int mtyp = msg_type(hdr);
 	bool reply = msg_probe(hdr);
 	void *data;
 	char *if_name;
 	int rc = 0;
 
+	if (dlen > U16_MAX)
+		goto exit;
+
 	if (tipc_link_is_blocked(l) || !xmitq)
 		goto exit;
 
diff --git a/net/tipc/monitor.c b/net/tipc/monitor.c
index 23706ee166074f..7b6c1c5c30dc84 100644
--- a/net/tipc/monitor.c
+++ b/net/tipc/monitor.c
@@ -457,6 +457,8 @@ void tipc_mon_rcv(struct net *net, void *data, u16 dlen, u32 addr,
 	state->probing = false;
 
 	/* Sanity check received domain record */
+	if (new_member_cnt > MAX_MON_DOMAIN)
+		return;
 	if (dlen < dom_rec_len(arrv_dom, 0))
 		return;
 	if (dlen != dom_rec_len(arrv_dom, new_member_cnt))