undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/javax/imageio/plugins/jpeg/CompressionBug.java
+++ b/test/jdk/javax/imageio/plugins/jpeg/CompressionBug.java
@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2001, 2017, 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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 4415068 4622201
+ * @summary Tests if the JPEG writer responds to the compression quality setting
+ */
+
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.util.Iterator;
+import java.util.Random;
+
+import javax.imageio.IIOImage;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.ImageWriteParam;
+import javax.imageio.ImageWriter;
+import javax.imageio.stream.ImageOutputStream;
+
+public class CompressionBug {
+
+    public CompressionBug() throws IOException {
+        File fileHighComp = File.createTempFile("CompressionHigh", ".jpg");
+        File fileLowComp = File.createTempFile("CompressionLow", ".jpg");
+
+        fileHighComp.deleteOnExit();
+        fileLowComp.deleteOnExit();
+
+        ImageOutputStream iosHighComp =
+            ImageIO.createImageOutputStream(fileHighComp);
+        ImageOutputStream iosLowComp =
+            ImageIO.createImageOutputStream(fileLowComp);
+
+        int width = 100;
+        int height = 100;
+        BufferedImage bi =
+            new BufferedImage(width, height,
+                              BufferedImage.TYPE_INT_RGB);
+        Graphics g = bi.createGraphics();
+        Random r = new Random();
+        for (int i = 0; i < 100; i++) {
+            Color c = new Color(r.nextInt(256),
+                                r.nextInt(256),
+                                r.nextInt(256));
+            int x = r.nextInt(width);
+            int y = r.nextInt(height);
+            int w = r.nextInt(width - x);
+            int h = r.nextInt(height - y);
+            g.setColor(c);
+            g.fillRect(x, y, w, h);
+        }
+
+        ImageTypeSpecifier typeSpecifier =
+            new ImageTypeSpecifier(bi.getColorModel(),
+                                   bi.getSampleModel());
+
+        ImageWriter writer = null;
+        Iterator iter = ImageIO.getImageWriters(typeSpecifier,"jpeg");
+        while (iter.hasNext()) {
+            writer = (ImageWriter)iter.next();
+            break;
+        }
+
+        IIOImage iioImg = new IIOImage(bi, null, null);
+        ImageWriteParam wParam = writer.getDefaultWriteParam();
+        wParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
+
+        // write the highly compressed image (a compression quality setting of
+        // 0.1f means low visual quality and small file size)
+        wParam.setCompressionQuality(0.1f);
+        writer.setOutput(iosHighComp);
+        writer.write(null, iioImg, wParam);
+
+        // write the somewhat compressed image (a compression quality setting
+        // of 0.9f means high visual quality and large file size)
+        wParam.setCompressionQuality(0.9f);
+        writer.setOutput(iosLowComp);
+        writer.write(null, iioImg, wParam);
+
+        long sizeOfFileLowComp = fileLowComp.length();
+        long sizeOfFileHighComp = fileHighComp.length();
+
+        // the highly compressed image file should have a smaller file size
+        // than the image file with low compression; throw an exception if
+        // this isn't the case
+        if (sizeOfFileLowComp < sizeOfFileHighComp) {
+            throw new RuntimeException("Lower compression quality did not " +
+                                       "reduce file size!");
+        }
+    }
+
+    public static void main(String args[]) throws IOException {
+        new CompressionBug();
+    }
+}