int brcmf_cfg80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
{
	struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
	struct net_device *ndev = wdev->netdev;

	if (ndev && ndev == cfg_to_ndev(cfg))
		return -ENOTSUPP;

	/* vif event pending in firmware */
	if (brcmf_cfg80211_vif_event_armed(cfg))
		return -EBUSY;

	if (ndev) {
		if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status) &&
		    cfg->escan_info.ifp == netdev_priv(ndev))
			brcmf_notify_escan_complete(cfg, netdev_priv(ndev),
						    true, true);

		brcmf_fil_iovar_int_set(netdev_priv(ndev), "mpc", 1);
	}

	switch (wdev->iftype) {
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_WDS:
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_MESH_POINT:
		return -EOPNOTSUPP;
	case NL80211_IFTYPE_AP:
		return brcmf_cfg80211_del_ap_iface(wiphy, wdev);
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
	case NL80211_IFTYPE_P2P_DEVICE:
		return brcmf_p2p_del_vif(wiphy, wdev);
	case NL80211_IFTYPE_UNSPECIFIED:
	default:
		return -EINVAL;
	}
	return -EOPNOTSUPP;
}

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.