diff --git a/wpa_supplicant/ap.c b/wpa_supplicant/ap.c
index b02c424..d10583b 100644
--- a/wpa_supplicant/ap.c
+++ b/wpa_supplicant/ap.c
@@ -373,18 +373,16 @@
 #ifdef CONFIG_P2P
 	struct wpa_supplicant *wpa_s = ctx;
 	const struct ieee80211_mgmt *mgmt;
-	size_t hdr_len;
 
 	mgmt = (const struct ieee80211_mgmt *) buf;
-	hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
-	if (hdr_len > len)
+	if (len < IEEE80211_HDRLEN + 1)
 		return;
 	if (mgmt->u.action.category != WLAN_ACTION_PUBLIC)
 		return;
 	wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 			   mgmt->u.action.category,
-			   &mgmt->u.action.u.vs_public_action.action,
-			   len - hdr_len, freq);
+			   buf + IEEE80211_HDRLEN + 1,
+			   len - IEEE80211_HDRLEN - 1, freq);
 #endif /* CONFIG_P2P */
 }
 
@@ -440,16 +438,14 @@
 #ifdef CONFIG_P2P
 	struct wpa_supplicant *wpa_s = ctx;
 	const struct ieee80211_mgmt *mgmt;
-	size_t hdr_len;
 
 	mgmt = (const struct ieee80211_mgmt *) buf;
-	hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
-	if (hdr_len > len)
+	if (len < IEEE80211_HDRLEN + 1)
 		return -1;
 	wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
 			   mgmt->u.action.category,
-			   &mgmt->u.action.u.vs_public_action.action,
-			   len - hdr_len, freq);
+			   buf + IEEE80211_HDRLEN + 1,
+			   len - IEEE80211_HDRLEN - 1, freq);
 #endif /* CONFIG_P2P */
 	return 0;
 }
diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index 53e23ff..4311208 100644
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -5368,7 +5368,7 @@
 	if (len == 0 && cred && cred->realm)
 		return hs20_nai_home_realm_list(wpa_s, dst_addr, cred->realm);
 
-	if (len % 1)
+	if (len & 1)
 		return -1;
 	len /= 2;
 	buf = os_malloc(len);
diff --git a/wpa_supplicant/dbus/dbus_dict_helpers.c b/wpa_supplicant/dbus/dbus_dict_helpers.c
index 61a9430..949ce7c 100644
--- a/wpa_supplicant/dbus/dbus_dict_helpers.c
+++ b/wpa_supplicant/dbus/dbus_dict_helpers.c
@@ -881,6 +881,8 @@
 		}
 
 		dbus_message_iter_recurse(iter, &iter_array);
+		os_memset(&tmpentry, 0, sizeof(tmpentry));
+		tmpentry.type = DBUS_TYPE_ARRAY;
 		if (_wpa_dbus_dict_entry_get_byte_array(&iter_array, &tmpentry)
 					== FALSE)
 			goto cleanup;
@@ -932,6 +934,7 @@
 		break;
 	case DBUS_TYPE_ARRAY:
 		success = _wpa_dbus_dict_entry_get_binarray(&iter_array, entry);
+		break;
 	default:
 		break;
 	}
diff --git a/wpa_supplicant/dbus/dbus_new_handlers.c b/wpa_supplicant/dbus/dbus_new_handlers.c
index 6e1eedb..a89a87d 100644
--- a/wpa_supplicant/dbus/dbus_new_handlers.c
+++ b/wpa_supplicant/dbus/dbus_new_handlers.c
@@ -271,6 +271,7 @@
 			wpa_config_update_prio_list(wpa_s->conf);
 
 		os_free(value);
+		value = NULL;
 		wpa_dbus_dict_entry_clear(&entry);
 	}
 
@@ -561,24 +562,28 @@
 			goto error;
 		if (!os_strcmp(entry.key, "Driver") &&
 		    (entry.type == DBUS_TYPE_STRING)) {
+			os_free(driver);
 			driver = os_strdup(entry.str_value);
 			wpa_dbus_dict_entry_clear(&entry);
 			if (driver == NULL)
 				goto error;
 		} else if (!os_strcmp(entry.key, "Ifname") &&
 			   (entry.type == DBUS_TYPE_STRING)) {
+			os_free(ifname);
 			ifname = os_strdup(entry.str_value);
 			wpa_dbus_dict_entry_clear(&entry);
 			if (ifname == NULL)
 				goto error;
 		} else if (!os_strcmp(entry.key, "ConfigFile") &&
 			   (entry.type == DBUS_TYPE_STRING)) {
+			os_free(confname);
 			confname = os_strdup(entry.str_value);
 			wpa_dbus_dict_entry_clear(&entry);
 			if (confname == NULL)
 				goto error;
 		} else if (!os_strcmp(entry.key, "BridgeIfname") &&
 			   (entry.type == DBUS_TYPE_STRING)) {
+			os_free(bridge_ifname);
 			bridge_ifname = os_strdup(entry.str_value);
 			wpa_dbus_dict_entry_clear(&entry);
 			if (bridge_ifname == NULL)
diff --git a/wpa_supplicant/dbus/dbus_new_handlers_p2p.c b/wpa_supplicant/dbus/dbus_new_handlers_p2p.c
index 8be8288..857b527 100644
--- a/wpa_supplicant/dbus/dbus_new_handlers_p2p.c
+++ b/wpa_supplicant/dbus/dbus_new_handlers_p2p.c
@@ -1143,6 +1143,7 @@
 		break;
 	default:
 		str = "device";
+		break;
 	}
 
 	return wpas_dbus_simple_property_getter(iter, DBUS_TYPE_STRING, &str,
@@ -2026,11 +2027,9 @@
 		/* Parse WPS Vendor Extensions sent in Beacon/Probe Response */
 		for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
 			if (hapd->conf->wps_vendor_ext[i] == NULL)
-				vendor_ext[i] = NULL;
-			else {
-				vendor_ext[num_vendor_ext++] =
-					hapd->conf->wps_vendor_ext[i];
-			}
+				continue;
+			vendor_ext[num_vendor_ext++] =
+				hapd->conf->wps_vendor_ext[i];
 		}
 	}
 
@@ -2039,7 +2038,7 @@
 							    DBUS_TYPE_BYTE,
 							    vendor_ext,
 							    num_vendor_ext,
-						 error);
+							    error);
 }
 
 
diff --git a/wpa_supplicant/dbus/dbus_old_handlers.c b/wpa_supplicant/dbus/dbus_old_handlers.c
index 7c4630e..c0cb1c2 100644
--- a/wpa_supplicant/dbus/dbus_old_handlers.c
+++ b/wpa_supplicant/dbus/dbus_old_handlers.c
@@ -113,24 +113,28 @@
 				goto error;
 			if (!strcmp(entry.key, "driver") &&
 			    (entry.type == DBUS_TYPE_STRING)) {
+				os_free(driver);
 				driver = os_strdup(entry.str_value);
 				wpa_dbus_dict_entry_clear(&entry);
 				if (driver == NULL)
 					goto error;
 			} else if (!strcmp(entry.key, "driver-params") &&
 				   (entry.type == DBUS_TYPE_STRING)) {
+				os_free(driver_param);
 				driver_param = os_strdup(entry.str_value);
 				wpa_dbus_dict_entry_clear(&entry);
 				if (driver_param == NULL)
 					goto error;
 			} else if (!strcmp(entry.key, "config-file") &&
 				   (entry.type == DBUS_TYPE_STRING)) {
+				os_free(confname);
 				confname = os_strdup(entry.str_value);
 				wpa_dbus_dict_entry_clear(&entry);
 				if (confname == NULL)
 					goto error;
 			} else if (!strcmp(entry.key, "bridge-ifname") &&
 				   (entry.type == DBUS_TYPE_STRING)) {
+				os_free(bridge_ifname);
 				bridge_ifname = os_strdup(entry.str_value);
 				wpa_dbus_dict_entry_clear(&entry);
 				if (bridge_ifname == NULL)
@@ -1200,16 +1204,19 @@
 			goto error;
 		if (!strcmp(entry.key, "opensc_engine_path") &&
 		    (entry.type == DBUS_TYPE_STRING)) {
+			os_free(opensc_engine_path);
 			opensc_engine_path = os_strdup(entry.str_value);
 			if (opensc_engine_path == NULL)
 				goto error;
 		} else if (!strcmp(entry.key, "pkcs11_engine_path") &&
 			   (entry.type == DBUS_TYPE_STRING)) {
+			os_free(pkcs11_engine_path);
 			pkcs11_engine_path = os_strdup(entry.str_value);
 			if (pkcs11_engine_path == NULL)
 				goto error;
 		} else if (!strcmp(entry.key, "pkcs11_module_path") &&
 				 (entry.type == DBUS_TYPE_STRING)) {
+			os_free(pkcs11_module_path);
 			pkcs11_module_path = os_strdup(entry.str_value);
 			if (pkcs11_module_path == NULL)
 				goto error;
diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index f511e1a..a9291a4 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -2792,9 +2792,9 @@
 
 
 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
-				      const struct ieee80211_mgmt *mgmt,
-				      size_t len, int freq)
+				      const u8 *frame, size_t len, int freq)
 {
+	const struct ieee80211_mgmt *mgmt;
 	const u8 *payload;
 	size_t plen;
 	u8 category;
@@ -2802,9 +2802,10 @@
 	if (len < IEEE80211_HDRLEN + 2)
 		return;
 
-	payload = &mgmt->u.action.category;
+	mgmt = (const struct ieee80211_mgmt *) frame;
+	payload = frame + IEEE80211_HDRLEN;
 	category = *payload++;
-	plen = (((const u8 *) mgmt) + len) - payload;
+	plen = len - IEEE80211_HDRLEN - 1;
 
 	wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
 		" Category=%u DataLen=%d freq=%d MHz",
@@ -3227,7 +3228,8 @@
 
 			if (stype == WLAN_FC_STYPE_ACTION) {
 				wpas_event_rx_mgmt_action(
-					wpa_s, mgmt, data->rx_mgmt.frame_len,
+					wpa_s, data->rx_mgmt.frame,
+					data->rx_mgmt.frame_len,
 					data->rx_mgmt.freq);
 				break;
 			}
diff --git a/wpa_supplicant/gas_query.c b/wpa_supplicant/gas_query.c
index aff1950..3986268 100644
--- a/wpa_supplicant/gas_query.c
+++ b/wpa_supplicant/gas_query.c
@@ -256,6 +256,7 @@
 static int gas_query_tx(struct gas_query *gas, struct gas_query_pending *query,
 			struct wpabuf *req)
 {
+	unsigned int wait_time;
 	int res, prot = pmf_in_use(gas->wpa_s, query->addr);
 
 	wpa_printf(MSG_DEBUG, "GAS: Send action frame to " MACSTR " len=%u "
@@ -266,10 +267,14 @@
 		*categ = WLAN_ACTION_PROTECTED_DUAL;
 	}
 	os_get_reltime(&query->last_oper);
+	wait_time = 1000;
+	if (gas->wpa_s->max_remain_on_chan &&
+	    wait_time > gas->wpa_s->max_remain_on_chan)
+		wait_time = gas->wpa_s->max_remain_on_chan;
 	res = offchannel_send_action(gas->wpa_s, query->freq, query->addr,
 				     gas->wpa_s->own_addr, query->addr,
-				     wpabuf_head(req), wpabuf_len(req), 1000,
-				     gas_query_tx_status, 0);
+				     wpabuf_head(req), wpabuf_len(req),
+				     wait_time, gas_query_tx_status, 0);
 	if (res == 0)
 		query->offchannel_tx_started = 1;
 	return res;
diff --git a/wpa_supplicant/wifi_display.c b/wpa_supplicant/wifi_display.c
index 8435b63..f0c4364 100644
--- a/wpa_supplicant/wifi_display.c
+++ b/wpa_supplicant/wifi_display.c
@@ -276,6 +276,8 @@
 
 	while (i + WIFI_DISPLAY_SUBELEM_HEADER_LEN < buflen) {
 		elen = WPA_GET_BE16(buf + i + 1);
+		if (i + WIFI_DISPLAY_SUBELEM_HEADER_LEN + elen > buflen)
+			break; /* truncated subelement */
 
 		if (buf[i] == id) {
 			subelem = os_zalloc(2 * elen + 1);
diff --git a/wpa_supplicant/wnm_sta.c b/wpa_supplicant/wnm_sta.c
index e395ef1..4a792c4 100644
--- a/wpa_supplicant/wnm_sta.c
+++ b/wpa_supplicant/wnm_sta.c
@@ -921,8 +921,7 @@
 	if (len < IEEE80211_HDRLEN + 2)
 		return;
 
-	pos = &mgmt->u.action.category;
-	pos++;
+	pos = ((const u8 *) mgmt) + IEEE80211_HDRLEN + 1;
 	act = *pos++;
 	end = ((const u8 *) mgmt) + len;
 
diff --git a/wpa_supplicant/wpa_supplicant.c b/wpa_supplicant/wpa_supplicant.c
index ffba0f5..c4d5cb2 100644
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -984,6 +984,7 @@
 	} else if (bss_osen && (ssid->proto & WPA_PROTO_OSEN)) {
 		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using OSEN");
 		/* TODO: parse OSEN element */
+		os_memset(&ie, 0, sizeof(ie));
 		ie.group_cipher = WPA_CIPHER_CCMP;
 		ie.pairwise_cipher = WPA_CIPHER_CCMP;
 		ie.key_mgmt = WPA_KEY_MGMT_OSEN;