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/management/loading/ArrayClassTest.java
+++ b/test/jdk/javax/management/loading/ArrayClassTest.java
@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2004, 2024, 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 4974913
+ * @summary Test that array classes can be found in signatures always
+ * and can be deserialized by the deprecated MBeanServer.deserialize method
+ * @author Eamonn McManus
+ *
+ * @run clean ArrayClassTest
+ * @run build ArrayClassTest
+ * @run main ArrayClassTest
+ */
+
+import java.io.*;
+import java.lang.reflect.*;
+import java.net.*;
+import java.nio.file.Paths;
+import javax.management.*;
+import javax.management.loading.*;
+
+public class ArrayClassTest {
+    public static void main(String[] args) throws Exception {
+        MBeanServer mbs = MBeanServerFactory.createMBeanServer();
+
+        String[] cpaths = System.getProperty("test.classes", ".")
+                                .split(File.pathSeparator);
+        URL[] urls = new URL[cpaths.length];
+        for (int i=0; i < cpaths.length; i++) {
+            urls[i] = Paths.get(cpaths[i]).toUri().toURL();
+        }
+
+        // Create a SpyLoader MBean that can load the same class names but
+        // will produce different results.
+        ClassLoader loader = new SpyLoader(urls);
+        ObjectName loaderName = new ObjectName("test:type=SpyLoader");
+        mbs.registerMBean(loader, loaderName);
+
+        ObjectName testName = new ObjectName("test:type=Test");
+        mbs.createMBean(Test.class.getName(), testName, loaderName,
+                        new Object[1], new String[] {X[].class.getName()});
+        ClassLoader checkLoader = mbs.getClassLoaderFor(testName);
+        if (checkLoader != loader)
+            throw new AssertionError("Wrong loader: " + checkLoader);
+
+        mbs.invoke(testName, "ignore", new Object[1],
+                   new String[] {Y[].class.getName()});
+
+        ByteArrayOutputStream bout = new ByteArrayOutputStream();
+        ObjectOutputStream oout = new ObjectOutputStream(bout);
+        oout.writeObject(new Z[0]);
+        oout.close();
+        byte[] bytes = bout.toByteArray();
+        ObjectInputStream oin = mbs.deserialize(testName, bytes);
+        Object zarray = oin.readObject();
+        String failed = null;
+        if (zarray instanceof Z[])
+            failed = "read back a real Z[]";
+        else if (!zarray.getClass().getName().equals(Z[].class.getName())) {
+            failed = "returned object of wrong type: " +
+                zarray.getClass().getName();
+        } else if (Array.getLength(zarray) != 0)
+            failed = "returned array of wrong size: " + Array.getLength(zarray);
+        if (failed != null) {
+            System.out.println("TEST FAILED: " + failed);
+            System.exit(1);
+        }
+
+        System.out.println("Test passed");
+    }
+
+    public static interface TestMBean {
+        public void ignore(Y[] ignored);
+    }
+
+    public static class Test implements TestMBean {
+        public Test(X[] ignored) {}
+        public void ignore(Y[] ignored) {}
+    }
+
+    public static class X {}
+    public static class Y {}
+    public static class Z implements Serializable {}
+
+    public static interface SpyLoaderMBean {}
+
+    public static class SpyLoader extends URLClassLoader
+            implements SpyLoaderMBean, PrivateClassLoader {
+        public SpyLoader(URL[] urls) {
+            // important that the parent classloader be null!
+            // otherwise we can pick up classes from the classpath
+            super(urls, null);
+        }
+
+        public Class findClass(String name) throws ClassNotFoundException {
+            System.out.println("findClass: " + name);
+            if (false)
+                new Throwable().printStackTrace(System.out);
+            Class c = super.findClass(name);
+            System.out.println(" -> " + name + " (" + c.getClassLoader() + ")");
+            return c;
+        }
+    }
+}