static struct hlist_head *nl_portid_hash_zalloc(size_t size)
{
	if (size <= PAGE_SIZE)
		return kzalloc(size, GFP_ATOMIC);
	else
		return (struct hlist_head *)
			__get_free_pages(GFP_ATOMIC | __GFP_ZERO,
					 get_order(size));
}

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.