diff --git a/net/can/isotp.c b/net/can/isotp.c
index 902cb61b6495..87de9a08cc85 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -1129,6 +1129,9 @@ static int isotp_bind(struct socket *sock, struct sockaddr *uaddr, int len)
 	if (len < ISOTP_MIN_NAMELEN)
 		return -EINVAL;
 
+	if (addr->can_family != AF_CAN)
+		return -EINVAL;
+
 	/* sanitize tx/rx CAN identifiers */
 	tx_id = addr->can_addr.tp.tx_id;
 	if (tx_id & CAN_EFF_FLAG)