diff --git a/drivers/net/ovpn/udp.c b/drivers/net/ovpn/udp.c
index 493a5a0744af..2610f3e23bf0 100644
--- a/drivers/net/ovpn/udp.c
+++ b/drivers/net/ovpn/udp.c
@@ -149,13 +149,17 @@ static int ovpn_udp4_output(struct ovpn_peer *peer, struct ovpn_bind *bind,
 	struct flowi4 fl = {
 		.saddr = bind->local.ipv4.s_addr,
 		.daddr = bind->remote.in4.sin_addr.s_addr,
-		.fl4_sport = inet_sk(sk)->inet_sport,
+		.fl4_sport = READ_ONCE(inet_sk(sk)->inet_sport),
 		.fl4_dport = bind->remote.in4.sin_port,
 		.flowi4_proto = sk->sk_protocol,
 		.flowi4_mark = sk->sk_mark,
 	};
 	int ret;
 
+	/* an uninitialized socket or connect(AF_UNSPEC) can cause this */
+	if (unlikely(!fl.fl4_sport))
+		return -EADDRNOTAVAIL;
+
 	local_bh_disable();
 	rt = dst_cache_get_ip4(cache, &fl.saddr);
 	if (rt)
@@ -226,13 +230,17 @@ static int ovpn_udp6_output(struct ovpn_peer *peer, struct ovpn_bind *bind,
 	struct flowi6 fl = {
 		.saddr = bind->local.ipv6,
 		.daddr = bind->remote.in6.sin6_addr,
-		.fl6_sport = inet_sk(sk)->inet_sport,
+		.fl6_sport = READ_ONCE(inet_sk(sk)->inet_sport),
 		.fl6_dport = bind->remote.in6.sin6_port,
 		.flowi6_proto = sk->sk_protocol,
 		.flowi6_mark = sk->sk_mark,
 		.flowi6_oif = bind->remote.in6.sin6_scope_id,
 	};
 
+	/* an uninitialized socket or connect(AF_UNSPEC) can cause this */
+	if (unlikely(!fl.fl6_sport))
+		return -EADDRNOTAVAIL;
+
 	local_bh_disable();
 	dst = dst_cache_get_ip6(cache, &fl.saddr);
 	if (dst)