brcmf_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *ndev,
		      struct cfg80211_ibss_params *params)
{
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
	struct brcmf_if *ifp = netdev_priv(ndev);
	struct brcmf_cfg80211_profile *profile = &ifp->vif->profile;
	struct brcmf_join_params join_params;
	size_t join_params_size = 0;
	s32 err = 0;
	s32 wsec = 0;
	s32 bcnprd;
	u16 chanspec;
	u32 ssid_len;

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

	if (params->ssid)
		brcmf_dbg(CONN, "SSID: %s\n", params->ssid);
	else {
		brcmf_dbg(CONN, "SSID: NULL, Not supported\n");
		return -EOPNOTSUPP;
	}

	set_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);

	if (params->bssid)
		brcmf_dbg(CONN, "BSSID: %pM\n", params->bssid);
	else
		brcmf_dbg(CONN, "No BSSID specified\n");

	if (params->chandef.chan)
		brcmf_dbg(CONN, "channel: %d\n",
			  params->chandef.chan->center_freq);
	else
		brcmf_dbg(CONN, "no channel specified\n");

	if (params->channel_fixed)
		brcmf_dbg(CONN, "fixed channel required\n");
	else
		brcmf_dbg(CONN, "no fixed channel required\n");

	if (params->ie && params->ie_len)
		brcmf_dbg(CONN, "ie len: %d\n", params->ie_len);
	else
		brcmf_dbg(CONN, "no ie specified\n");

	if (params->beacon_interval)
		brcmf_dbg(CONN, "beacon interval: %d\n",
			  params->beacon_interval);
	else
		brcmf_dbg(CONN, "no beacon interval specified\n");

	if (params->basic_rates)
		brcmf_dbg(CONN, "basic rates: %08X\n", params->basic_rates);
	else
		brcmf_dbg(CONN, "no basic rates specified\n");

	if (params->privacy)
		brcmf_dbg(CONN, "privacy required\n");
	else
		brcmf_dbg(CONN, "no privacy required\n");

	/* Configure Privacy for starter */
	if (params->privacy)
		wsec |= WEP_ENABLED;

	err = brcmf_fil_iovar_int_set(ifp, "wsec", wsec);
	if (err) {
		brcmf_err("wsec failed (%d)\n", err);
		goto done;
	}

	/* Configure Beacon Interval for starter */
	if (params->beacon_interval)
		bcnprd = params->beacon_interval;
	else
		bcnprd = 100;

	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_BCNPRD, bcnprd);
	if (err) {
		brcmf_err("WLC_SET_BCNPRD failed (%d)\n", err);
		goto done;
	}

	/* Configure required join parameter */
	memset(&join_params, 0, sizeof(struct brcmf_join_params));

	/* SSID */
	ssid_len = min_t(u32, params->ssid_len, IEEE80211_MAX_SSID_LEN);
	memcpy(join_params.ssid_le.SSID, params->ssid, ssid_len);
	join_params.ssid_le.SSID_len = cpu_to_le32(ssid_len);
	join_params_size = sizeof(join_params.ssid_le);

	/* BSSID */
	if (params->bssid) {
		memcpy(join_params.params_le.bssid, params->bssid, ETH_ALEN);
		join_params_size += BRCMF_ASSOC_PARAMS_FIXED_SIZE;
		memcpy(profile->bssid, params->bssid, ETH_ALEN);
	} else {
		eth_broadcast_addr(join_params.params_le.bssid);
		eth_zero_addr(profile->bssid);
	}

	/* Channel */
	if (params->chandef.chan) {
		u32 target_channel;

		cfg->channel =
			ieee80211_frequency_to_channel(
				params->chandef.chan->center_freq);
		if (params->channel_fixed) {
			/* adding chanspec */
			chanspec = chandef_to_chanspec(&cfg->d11inf,
						       &params->chandef);
			join_params.params_le.chanspec_list[0] =
				cpu_to_le16(chanspec);
			join_params.params_le.chanspec_num = cpu_to_le32(1);
			join_params_size += sizeof(join_params.params_le);
		}

		/* set channel for starter */
		target_channel = cfg->channel;
		err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_CHANNEL,
					    target_channel);
		if (err) {
			brcmf_err("WLC_SET_CHANNEL failed (%d)\n", err);
			goto done;
		}
	} else
		cfg->channel = 0;

	cfg->ibss_starter = false;


	err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID,
				     &join_params, join_params_size);
	if (err) {
		brcmf_err("WLC_SET_SSID failed (%d)\n", err);
		goto done;
	}

done:
	if (err)
		clear_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);
	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.