static void brcmf_update_ht_cap(struct ieee80211_supported_band *band,
				u32 bw_cap[2], u32 nchain)
{
	band->ht_cap.ht_supported = true;
	if (bw_cap[band->band] & WLC_BW_40MHZ_BIT) {
		band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
		band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
	}
	band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
	band->ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
	band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
	band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
	memset(band->ht_cap.mcs.rx_mask, 0xff, nchain);
	band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
}

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.