brcmf_cfg80211_change_station(struct wiphy *wiphy, struct net_device *ndev,
			      const u8 *mac, struct station_parameters *params)
{
	struct brcmf_if *ifp = netdev_priv(ndev);
	s32 err;

	brcmf_dbg(TRACE, "Enter, MAC %pM, mask 0x%04x set 0x%04x\n", mac,
		  params->sta_flags_mask, params->sta_flags_set);

	/* Ignore all 00 MAC */
	if (is_zero_ether_addr(mac))
		return 0;

	if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
		return 0;

	if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
		err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SCB_AUTHORIZE,
					     (void *)mac, ETH_ALEN);
	else
		err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SCB_DEAUTHORIZE,
					     (void *)mac, ETH_ALEN);
	if (err < 0)
		brcmf_err("Setting SCB (de-)authorize failed, %d\n", err);

	return err;
}

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.