static int brcmf_vif_add_validate(struct brcmf_cfg80211_info *cfg,
				  enum nl80211_iftype new_type)
{
	struct brcmf_cfg80211_vif *pos;
	struct iface_combination_params params = {
		.num_different_channels = 1,
	};

	list_for_each_entry(pos, &cfg->vif_list, list)
		params.iftype_num[pos->wdev.iftype]++;

	params.iftype_num[new_type]++;
	return cfg80211_check_combinations(cfg->wiphy, &params);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.