ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
                 ofp_port_t *ofp_portp)
{
    ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE;
    int error;

    error = ofproto->ofproto_class->port_add(ofproto, netdev);
    if (!error) {
        const char *netdev_name = netdev_get_name(netdev);

        simap_put(&ofproto->ofp_requests, netdev_name,
                  ofp_to_u16(ofp_port));
        error = update_port(ofproto, netdev_name);
    }
    if (ofp_portp) {
        *ofp_portp = OFPP_NONE;
        if (!error) {
            struct ofproto_port ofproto_port;

            error = ofproto_port_query_by_name(ofproto,
                                               netdev_get_name(netdev),
                                               &ofproto_port);
            if (!error) {
                *ofp_portp = ofproto_port.ofp_port;
                ofproto_port_destroy(&ofproto_port);
            }
        }
    }
    return error;
}

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.