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

@@ -747,22 +747,33 @@
 
         try {
             loop: while (true) {
                 int chunkLength = stream.readInt();
                 int chunkType = stream.readInt();
-                int chunkCRC;
+                // Initialize chunkCRC, value assigned has no significance
+                int chunkCRC = -1;
 
                 // verify the chunk length
                 if (chunkLength < 0) {
                     throw new IIOException("Invalid chunk length " + chunkLength);
                 };
 
                 try {
+                    /*
+                     * As per PNG specification all chunks should have
+                     * 4 byte CRC. But there are some images where
+                     * CRC is not present/corrupt for IEND chunk.
+                     * And these type of images are supported by other
+                     * decoders. So as soon as we hit chunk type
+                     * for IEND chunk stop reading metadata.
+                     */
+                    if (chunkType != IEND_TYPE) {
                     stream.mark();
                     stream.seek(stream.getStreamPosition() + chunkLength);
                     chunkCRC = stream.readInt();
                     stream.reset();
+                    }
                 } catch (IOException e) {
                     throw new IIOException("Invalid chunk length " + chunkLength);
                 }
 
                 switch (chunkType) {