static inline int br_ip_hash(struct net_bridge_mdb_htable *mdb,
			     struct br_ip *ip)
{
	switch (ip->proto) {
	case htons(ETH_P_IP):
		return __br_ip4_hash(mdb, ip->u.ip4, ip->vid);
#if IS_ENABLED(CONFIG_IPV6)
	case htons(ETH_P_IPV6):
		return __br_ip6_hash(mdb, &ip->u.ip6, ip->vid);
#endif
	}
	return 0;
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.