privsep: Fix scan result fetching with Beacon frame IEs

wpa_priv did not yet support Beacon frame IEs (res->beacon_ie_len) which
resulted in invalid scan data being accepted in driver_privsep.c. Add
support for res->beacon_ie_len and also fix the validation step to take
this new variable length field into account.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/drivers/driver_privsep.c

@@ -173,7 +173,11 @@ wpa_driver_privsep_get_scan_results2(void *priv)
 			break;
 		os_memcpy(r, pos, len);
 		pos += len;
-		if (sizeof(*r) + r->ie_len > (size_t) len) {
+		if (sizeof(*r) + r->ie_len + r->beacon_ie_len > (size_t) len) {
+			wpa_printf(MSG_ERROR,
+				   "privsep: Invalid scan result len (%d + %d + %d > %d)",
+				   (int) sizeof(*r), (int) r->ie_len,
+				   (int) r->beacon_ie_len, len);
 			os_free(r);
 			break;
 		}

wpa_supplicant/wpa_priv.c

@@ -177,7 +177,7 @@ static void wpa_priv_get_scan_results2(struct wpa_priv_interface *iface,
 
 	for (i = 0; i < res->num; i++) {
 		struct wpa_scan_res *r = res->res[i];
-		val = sizeof(*r) + r->ie_len;
+		val = sizeof(*r) + r->ie_len + r->beacon_ie_len;
 		if (end - pos < (int) sizeof(int) + val)
 			break;
 		os_memcpy(pos, &val, sizeof(int));