--- old/src/java.desktop/windows/native/libawt/windows/awt_List.cpp	2018-10-29 17:22:57.212409525 +0530
+++ new/src/java.desktop/windows/native/libawt/windows/awt_List.cpp	2018-10-29 17:22:56.828409525 +0530
@@ -479,7 +479,7 @@
 {
     if (IsFocusingMouseMessage(msg)) {
         LONG item = static_cast<LONG>(SendListMessage(LB_ITEMFROMPOINT, 0, msg->lParam));
-        if (item != LB_ERR) {
+        if (item != LB_ERR && item >= 0 && item < (LONG)GetCount()) {
             if (isMultiSelect) {
                 if (IsItemSelected(item)) {
                     Deselect(item);