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/java/util/zip/InflaterInputStream/UnexpectedEndOfZlibStream.java
+++ b/test/jdk/java/util/zip/InflaterInputStream/UnexpectedEndOfZlibStream.java
@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2022, 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 8292327
+ * @summary Test the case where Inflater.needsInput() is true but the native
+ *          inflater still has unwritten output in its internal buffer.
+ */
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.zip.Deflater;
+import java.util.zip.DeflaterInputStream;
+import java.util.zip.Inflater;
+import java.util.zip.InflaterInputStream;
+
+public class UnexpectedEndOfZlibStream {
+    public static void main(String[] args) throws Exception {
+        String original = "Readsuncompresseddataintoanarrayofbytes0123456789Ifcodelenis" +
+            "notzerothemethodwillblockReadsuncompresseddataintoanarrayofbytes123456789";
+        byte[] deflated =
+            new DeflaterInputStream(
+                new ByteArrayInputStream(original.getBytes("US-ASCII")),
+                new Deflater(Deflater.DEFAULT_COMPRESSION, /*nowrap=*/ true)
+            ).readAllBytes();
+
+        // using readAllBytes succeeds, the underlying gzip data seems to be well-formed
+        byte[] inflated =
+            new InflaterInputStream(
+                new ByteArrayInputStream(deflated),
+                new Inflater(/*nowrap=*/ true)
+            ).readAllBytes();
+
+        if (!original.equals(new String(inflated, "US-ASCII"))) {
+            throw new Exception("Inflated output differs from original");
+        }
+
+        // a 128 byte read followed by a 512 byte read fails after JDK-8281962
+        InflaterInputStream is =
+            new InflaterInputStream(
+                new ByteArrayInputStream(deflated),
+                new Inflater(/*nowrap=*/ true));
+        byte[] buf = new byte[512];
+        int n = is.read(buf, 0, 128);
+        int pos = n;
+        while (n > 0) {
+            if ((n = is.read(buf, pos, 1)) > 0) { // Unexpected end of ZLIB input stream
+                pos+= n;
+            }
+        }
+        if (!original.equals(new String(buf, 0, pos, "US-ASCII"))) {
+            throw new Exception("Inflated output differs from original");
+        }
+    }
+}