static void brcmf_cfg80211_reg_notifier(struct wiphy *wiphy,
					struct regulatory_request *req)
{
	struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
	struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
	struct brcmf_fil_country_le ccreq;
	s32 err;
	int i;

	/* ignore non-ISO3166 country codes */
	for (i = 0; i < sizeof(req->alpha2); i++)
		if (req->alpha2[i] < 'A' || req->alpha2[i] > 'Z') {
			brcmf_err("not a ISO3166 code (0x%02x 0x%02x)\n",
				  req->alpha2[0], req->alpha2[1]);
			return;
		}

	brcmf_dbg(TRACE, "Enter: initiator=%d, alpha=%c%c\n", req->initiator,
		  req->alpha2[0], req->alpha2[1]);

	err = brcmf_fil_iovar_data_get(ifp, "country", &ccreq, sizeof(ccreq));
	if (err) {
		brcmf_err("Country code iovar returned err = %d\n", err);
		return;
	}

	err = brcmf_translate_country_code(ifp->drvr, req->alpha2, &ccreq);
	if (err)
		return;

	err = brcmf_fil_iovar_data_set(ifp, "country", &ccreq, sizeof(ccreq));
	if (err) {
		brcmf_err("Firmware rejected country setting\n");
		return;
	}
	brcmf_setup_wiphybands(wiphy);
}

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.