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

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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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
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55
test/jdk/java/lang/instrument/CustomSystemLoader/Agent.java Normal file
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/*
* Copyright (c) 2016, 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.
*/
import java.io.PrintStream;
import java.lang.instrument.*;
import java.lang.reflect.Field;
/**
* @test
* @bug 8160950
* @summary test for custom system class loader
*
* @run build App Agent CustomLoader
* @run shell ../MakeJAR3.sh Agent 'Can-Retransform-Classes: true'
* @run main/othervm -javaagent:Agent.jar -Djava.system.class.loader=CustomLoader App
*/
public class Agent {
private static PrintStream err = System.err;
private static PrintStream out = System.out;
public static boolean failed = false;
public static void premain(String agentArgs, Instrumentation instrumentation) {
ClassLoader myClassLoader = Agent.class.getClassLoader();
out.println("Agent: started; myClassLoader: " + myClassLoader);
try {
Field fld = myClassLoader.getClass().getField("agentClassLoader");
fld.set(myClassLoader.getClass(), myClassLoader);
} catch (Exception ex) {
failed = true;
ex.printStackTrace();
}
out.println("Agent: finished");
}
}

46
test/jdk/java/lang/instrument/CustomSystemLoader/App.java Normal file
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/*
* Copyright (c) 2016, 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.
*/
import java.io.PrintStream;
public class App {
public static void main(String args[]) throws Exception {
(new App()).run(args, System.out);
}
public void run(String args[], PrintStream out) throws Exception {
out.println("App: Test started");
if (CustomLoader.agentClassLoader != CustomLoader.myself) {
System.out.println("App: agentClassLoader: " + CustomLoader.agentClassLoader);
System.out.println("App: CustomLoader.myself: " + CustomLoader.myself);
System.out.println("App: myClassLoader: " + App.class.getClassLoader());
throw new Exception("App: Agent's system class loader is not CustomLoader");
} else if (Agent.failed) {
throw new Exception("App: Agent failed");
} else if (CustomLoader.failed) {
throw new Exception("App: CustomLoader failed");
}
out.println("App: Test passed");
}
}

81
test/jdk/java/lang/instrument/CustomSystemLoader/CustomLoader.java Normal file
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/*
* Copyright (c) 2016, 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.
*/
import java.io.DataInputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;
public class CustomLoader extends ClassLoader {
private static PrintStream out = System.out;
public static ClassLoader myself;
public static ClassLoader agentClassLoader;
public static boolean failed = true;
public CustomLoader(ClassLoader classLoader) {
super(classLoader);
myself = this;
}
@Override
public Class<?> loadClass(String name) throws ClassNotFoundException {
out.println("CustomLoader: loading class: " + name);
if (name.equals("Agent")) {
Class c = null;
try {
byte[] buf = locateBytes();
c = defineClass(name, buf, 0, buf.length);
} catch (IOException ex) {
throw new ClassNotFoundException(ex.getMessage());
}
resolveClass(c);
out.println("CustomLoader.loadClass after resolveClass: " + name +
"; Class: " + c + "; ClassLoader: " + c.getClassLoader());
return c;
}
return super.loadClass(name);
}
private byte[] locateBytes() throws IOException {
try {
JarFile jar = new JarFile("Agent.jar");
InputStream is = jar.getInputStream(jar.getEntry("Agent.class"));
int len = is.available();
byte[] buf = new byte[len];
DataInputStream in = new DataInputStream(is);
in.readFully(buf);
return buf;
} catch (IOException ioe) {
ioe.printStackTrace();
throw new IOException("Test failed due to IOException!");
}
}
void appendToClassPathForInstrumentation(String path) {
out.println("CustomLoader.appendToClassPathForInstrumentation: " +
this + ", jar: " + path);
failed = false;
}
}