static s32 brcmf_inform_ibss(struct brcmf_cfg80211_info *cfg,
			     struct net_device *ndev, const u8 *bssid)
{
	struct wiphy *wiphy = cfg_to_wiphy(cfg);
	struct ieee80211_channel *notify_channel;
	struct brcmf_bss_info_le *bi = NULL;
	struct ieee80211_supported_band *band;
	struct cfg80211_bss *bss;
	struct brcmu_chan ch;
	u8 *buf = NULL;
	s32 err = 0;
	u32 freq;
	u16 notify_capability;
	u16 notify_interval;
	u8 *notify_ie;
	size_t notify_ielen;
	s32 notify_signal;

	brcmf_dbg(TRACE, "Enter\n");

	buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL);
	if (buf == NULL) {
		err = -ENOMEM;
		goto CleanUp;
	}

	*(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX);

	err = brcmf_fil_cmd_data_get(netdev_priv(ndev), BRCMF_C_GET_BSS_INFO,
				     buf, WL_BSS_INFO_MAX);
	if (err) {
		brcmf_err("WLC_GET_BSS_INFO failed: %d\n", err);
		goto CleanUp;
	}

	bi = (struct brcmf_bss_info_le *)(buf + 4);

	ch.chspec = le16_to_cpu(bi->chanspec);
	cfg->d11inf.decchspec(&ch);

	if (ch.band == BRCMU_CHAN_BAND_2G)
		band = wiphy->bands[NL80211_BAND_2GHZ];
	else
		band = wiphy->bands[NL80211_BAND_5GHZ];

	freq = ieee80211_channel_to_frequency(ch.control_ch_num, band->band);
	cfg->channel = freq;
	notify_channel = ieee80211_get_channel(wiphy, freq);

	notify_capability = le16_to_cpu(bi->capability);
	notify_interval = le16_to_cpu(bi->beacon_period);
	notify_ie = (u8 *)bi + le16_to_cpu(bi->ie_offset);
	notify_ielen = le32_to_cpu(bi->ie_length);
	notify_signal = (s16)le16_to_cpu(bi->RSSI) * 100;

	brcmf_dbg(CONN, "channel: %d(%d)\n", ch.control_ch_num, freq);
	brcmf_dbg(CONN, "capability: %X\n", notify_capability);
	brcmf_dbg(CONN, "beacon interval: %d\n", notify_interval);
	brcmf_dbg(CONN, "signal: %d\n", notify_signal);

	bss = cfg80211_inform_bss(wiphy, notify_channel,
				  CFG80211_BSS_FTYPE_UNKNOWN, bssid, 0,
				  notify_capability, notify_interval,
				  notify_ie, notify_ielen, notify_signal,
				  GFP_KERNEL);

	if (!bss) {
		err = -ENOMEM;
		goto CleanUp;
	}

	cfg80211_put_bss(wiphy, bss);

CleanUp:

	kfree(buf);

	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.