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.

test/jdk/java/awt/image/ConvolveOp/KernelInitialisationTest.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2025, 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     8368729
+ * @summary Tests that passing invalid values to Kernel constructor
+ *          throws only IllegalArgumentException or NullPointerException
+ */
+
+import java.awt.image.Kernel;
+
+public class KernelInitialisationTest {
+
+    private static void test(int width, int height, float[] data,
+                             Class<?> expected)
+    {
+        System.out.printf("Testing for width: %d, height: %d, data: %s%n",
+                          width, height, data == null ? "null" : "not null");
+        Class<?> actual = null;
+        try {
+            new Kernel(width, height, data);
+        } catch (Exception e) {
+            actual = e.getClass();
+        }
+        if (actual != expected) {
+            System.err.println("Expected: " + expected);
+            System.err.println("Actual: " + actual);
+            throw new RuntimeException("Test failed");
+        }
+    }
+
+    private static void testIAE(int width, int height, int len) {
+        test(width, height, new float[len], IllegalArgumentException.class);
+    }
+
+    private static void testNPE(int width, int height) {
+        test(width, height, null, NullPointerException.class);
+    }
+
+    public static void main(String[] args) {
+        int[][] sizes = {{-1, 1}, {1, -1}, {-1, -1}, {50, Integer.MAX_VALUE}};
+        int[] lens = {1, 100};
+        for (int[] kernelSize : sizes) {
+            for (int len : lens) {
+                testIAE(kernelSize[0], kernelSize[1], len);
+            }
+            testNPE(kernelSize[0], kernelSize[1]);
+        }
+        testNPE(10, 10);     // NPE on valid width and height
+        testIAE(10, 10, 10); // IAE on valid width and height but small data
+    }
+}