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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
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105
test/hotspot/jtreg/runtime/LoadClass/TriggerResize.java Normal file
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/*
* Copyright (c) 2017, 2021, 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.lang.ClassLoader;
public class TriggerResize extends ClassLoader
{
static private int[] DATA = // bytes for "class TestCase00000 {}"
{
-54, -2, -70, -66, 0, 0, 0, 52, 0, 13, // 0
10, 0, 3, 0, 10, 7, 0, 11, 7, 0, // 10
12, 1, 0, 6, 60, 105, 110, 105, 116, 62, // 20
1, 0, 3, 40, 41, 86, 1, 0, 4, 67, // 30
111, 100, 101, 1, 0, 15, 76, 105, 110, 101, // 40
78, 117, 109, 98, 101, 114, 84, 97, 98, 108, // 50
101, 1, 0, 10, 83, 111, 117, 114, 99, 101, // 60
70, 105, 108, 101, 1, 0, 18, 84, 101, 115, // 70
116, 67, 97, 115, 101, 48, 48, 48, 48, 48, // 80
46, 106, 97, 118, 97, 12, 0, 4, 0, 5, // 90
1, 0, 13, 84, 101, 115, 116, 67, 97, 115, // 100
101, 48, 48, 48, 48, 48, 1, 0, 16, 106, // 110
97, 118, 97, 47, 108, 97, 110, 103, 47, 79, // 120
98, 106, 101, 99, 116, 0, 32, 0, 2, 0, // 130
3, 0, 0, 0, 0, 0, 1, 0, 0, 0, // 140
4, 0, 5, 0, 1, 0, 6, 0, 0, 0, // 150
29, 0, 1, 0, 1, 0, 0, 0, 5, 42, // 160
-73, 0, 1, -79, 0, 0, 0, 1, 0, 7, // 170
0, 0, 0, 6, 0, 1, 0, 0, 0, 1, // 180
0, 1, 0, 8, 0, 0, 0, 2, 0, 9 // 190
};
static private int INDEX1 = 85;
static private int INDEX2 = 111;
static private int BASE = 48;
public TriggerResize()
{
super();
}
public void load(int index)
{
byte[] bytes = new byte[TriggerResize.DATA.length];
for (int i=0; i<bytes.length; i++)
{
bytes[i] = (byte)TriggerResize.DATA[i];
}
// replace id "00000" in TestCase00000 to generate new class on the fly
{
int byte1 = index % 10;
int byte2 = index / 10 % 10;
int byte3 = index / 100 % 10;
int byte4 = index / 1000 % 10;
int byte5 = index / 10000 % 10;
bytes[INDEX1+0] = bytes[INDEX2+0] = (byte)(BASE+byte5);
bytes[INDEX1+1] = bytes[INDEX2+1] = (byte)(BASE+byte4);
bytes[INDEX1+2] = bytes[INDEX2+2] = (byte)(BASE+byte3);
bytes[INDEX1+3] = bytes[INDEX2+3] = (byte)(BASE+byte2);
bytes[INDEX1+4] = bytes[INDEX2+4] = (byte)(BASE+byte1);
}
Class generatedClass = defineClass(bytes, 0, bytes.length);
resolveClass(generatedClass);
}
public static void main(String args[]) throws Exception
{
int count = 0;
if (args.length >= 1) {
Integer i = Integer.parseInt(args[0]);
count = i.intValue();
}
TriggerResize test = new TriggerResize();
for (int i = 0; i <= count; i++)
{
test.load(i);
}
// trigger safepoint to resize the SystemDictionary if needed
System.gc();
}
}