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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.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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103
test/jdk/java/util/zip/ZipFile/MultiThreadedReadTest.java Normal file
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/*
* Copyright (c) 2014, 2019, 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 8038491
* @summary Crash in ZipFile.read() when ZipFileInputStream is shared between threads
* @library /test/lib
* @build jdk.test.lib.Platform
* jdk.test.lib.util.FileUtils
* @run main MultiThreadedReadTest
*/
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.nio.file.Paths;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
import jdk.test.lib.util.FileUtils;
public class MultiThreadedReadTest extends Thread {
private static final int NUM_THREADS = 10;
private static final String ZIPFILE_NAME =
System.currentTimeMillis() + "-bug8038491-tmp.large.zip";
private static final String ZIPENTRY_NAME = "random.txt";
private static InputStream is = null;
public static void main(String args[]) throws Exception {
createZipFile();
try (ZipFile zf = new ZipFile(new File(ZIPFILE_NAME))) {
is = zf.getInputStream(zf.getEntry(ZIPENTRY_NAME));
Thread[] threadArray = new Thread[NUM_THREADS];
for (int i = 0; i < threadArray.length; i++) {
threadArray[i] = new MultiThreadedReadTest();
}
for (int i = 0; i < threadArray.length; i++) {
threadArray[i].start();
}
for (int i = 0; i < threadArray.length; i++) {
threadArray[i].join();
}
} finally {
long t = System.currentTimeMillis();
FileUtils.deleteFileIfExistsWithRetry(Paths.get(ZIPFILE_NAME));
System.out.println("Deleting zip file took:" +
(System.currentTimeMillis() - t) + "ms");
}
}
private static void createZipFile() throws Exception {
CRC32 crc32 = new CRC32();
long t = System.currentTimeMillis();
File zipFile = new File(ZIPFILE_NAME);
try (FileOutputStream fos = new FileOutputStream(zipFile);
BufferedOutputStream bos = new BufferedOutputStream(fos);
ZipOutputStream zos = new ZipOutputStream(bos)) {
ZipEntry e = new ZipEntry(ZIPENTRY_NAME);
e.setMethod(ZipEntry.STORED);
byte[] toWrite = "BLAH".repeat(10_000).getBytes();
e.setTime(t);
e.setSize(toWrite.length);
crc32.reset();
crc32.update(toWrite);
e.setCrc(crc32.getValue());
zos.putNextEntry(e);
zos.write(toWrite);
}
}
@Override
public void run() {
try {
while (is.read() != -1) { }
} catch (Exception e) {
System.out.println("read exception:" + e);
// Swallow any Exceptions (which are expected) - we're only interested in the crash
}
}
}