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src/java.desktop/share/classes/com/sun/imageio/plugins/png/PNGImageReader.java

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@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -1046,11 +1046,12 @@
         int bitDepth = metadata.IHDR_bitDepth;
         int inputBands = inputBandsForColorType[metadata.IHDR_colorType];
         int bytesPerPixel = (bitDepth == 16) ? 2 : 1;
         bytesPerPixel *= inputBands;
 
-        int bytesPerRow = (inputBands*passWidth*bitDepth + 7)/8;
+        int bitsPerRow = Math.multiplyExact((inputBands * bitDepth), passWidth);
+        int bytesPerRow = (bitsPerRow + 7) / 8;
         int eltsPerRow = (bitDepth == 16) ? bytesPerRow/2 : bytesPerRow;
 
         // If no pixels need updating, just skip the input data
         if (updateWidth == 0) {
             for (int srcY = 0; srcY < passHeight; srcY++) {
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