brcmf_cfg80211_get_station(struct wiphy *wiphy, struct net_device *ndev,
			   const u8 *mac, struct station_info *sinfo)
{
	struct brcmf_if *ifp = netdev_priv(ndev);
	struct brcmf_scb_val_le scb_val;
	s32 err = 0;
	struct brcmf_sta_info_le sta_info_le;
	u32 sta_flags;
	u32 is_tdls_peer;
	s32 total_rssi;
	s32 count_rssi;
	int rssi;
	u32 i;

	brcmf_dbg(TRACE, "Enter, MAC %pM\n", mac);
	if (!check_vif_up(ifp->vif))
		return -EIO;

	if (brcmf_is_ibssmode(ifp->vif))
		return brcmf_cfg80211_get_station_ibss(ifp, sinfo);

	memset(&sta_info_le, 0, sizeof(sta_info_le));
	memcpy(&sta_info_le, mac, ETH_ALEN);
	err = brcmf_fil_iovar_data_get(ifp, "tdls_sta_info",
				       &sta_info_le,
				       sizeof(sta_info_le));
	is_tdls_peer = !err;
	if (err) {
		err = brcmf_fil_iovar_data_get(ifp, "sta_info",
					       &sta_info_le,
					       sizeof(sta_info_le));
		if (err < 0) {
			brcmf_err("GET STA INFO failed, %d\n", err);
			goto done;
		}
	}
	brcmf_dbg(TRACE, "version %d\n", le16_to_cpu(sta_info_le.ver));
	sinfo->filled = BIT(NL80211_STA_INFO_INACTIVE_TIME);
	sinfo->inactive_time = le32_to_cpu(sta_info_le.idle) * 1000;
	sta_flags = le32_to_cpu(sta_info_le.flags);
	brcmf_convert_sta_flags(sta_flags, sinfo);
	sinfo->sta_flags.mask |= BIT(NL80211_STA_FLAG_TDLS_PEER);
	if (is_tdls_peer)
		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
	else
		sinfo->sta_flags.set &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
	if (sta_flags & BRCMF_STA_ASSOC) {
		sinfo->filled |= BIT(NL80211_STA_INFO_CONNECTED_TIME);
		sinfo->connected_time = le32_to_cpu(sta_info_le.in);
		brcmf_fill_bss_param(ifp, sinfo);
	}
	if (sta_flags & BRCMF_STA_SCBSTATS) {
		sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED);
		sinfo->tx_failed = le32_to_cpu(sta_info_le.tx_failures);
		sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS);
		sinfo->tx_packets = le32_to_cpu(sta_info_le.tx_pkts);
		sinfo->tx_packets += le32_to_cpu(sta_info_le.tx_mcast_pkts);
		sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS);
		sinfo->rx_packets = le32_to_cpu(sta_info_le.rx_ucast_pkts);
		sinfo->rx_packets += le32_to_cpu(sta_info_le.rx_mcast_pkts);
		if (sinfo->tx_packets) {
			sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
			sinfo->txrate.legacy =
				le32_to_cpu(sta_info_le.tx_rate) / 100;
		}
		if (sinfo->rx_packets) {
			sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE);
			sinfo->rxrate.legacy =
				le32_to_cpu(sta_info_le.rx_rate) / 100;
		}
		if (le16_to_cpu(sta_info_le.ver) >= 4) {
			sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES);
			sinfo->tx_bytes = le64_to_cpu(sta_info_le.tx_tot_bytes);
			sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES);
			sinfo->rx_bytes = le64_to_cpu(sta_info_le.rx_tot_bytes);
		}
		total_rssi = 0;
		count_rssi = 0;
		for (i = 0; i < BRCMF_ANT_MAX; i++) {
			if (sta_info_le.rssi[i]) {
				sinfo->chain_signal_avg[count_rssi] =
					sta_info_le.rssi[i];
				sinfo->chain_signal[count_rssi] =
					sta_info_le.rssi[i];
				total_rssi += sta_info_le.rssi[i];
				count_rssi++;
			}
		}
		if (count_rssi) {
			sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL);
			sinfo->chains = count_rssi;

			sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
			total_rssi /= count_rssi;
			sinfo->signal = total_rssi;
		} else if (test_bit(BRCMF_VIF_STATUS_CONNECTED,
			&ifp->vif->sme_state)) {
			memset(&scb_val, 0, sizeof(scb_val));
			err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_RSSI,
						     &scb_val, sizeof(scb_val));
			if (err) {
				brcmf_err("Could not get rssi (%d)\n", err);
				goto done;
			} else {
				rssi = le32_to_cpu(scb_val.val);
				sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
				sinfo->signal = rssi;
				brcmf_dbg(CONN, "RSSI %d dBm\n", rssi);
			}
		}
	}
done:
	brcmf_dbg(TRACE, "Exit\n");
	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.