On Thu, 29 Oct 2026 12:43:04 GMT, Timofei Fedotov <[email protected]> wrote:
> DTLSReassembler can queue fragments of the same handshake message with > different total messageLength values. Reassembly holes are initialized from > the first fragment, while the output array is allocated using the fragment > with the lowest offset. > > For the same epoch, message sequence, and HELLO_REQUEST type, submit these > fragments in order: > offset 5, length 50, total message length 100; > offset 0, length 5, total message length 10; > offset 55, length 45, total message length 100. > > The final fragment completes the holes, but copying the buffered fragments > into the array sized for a ten-byte message triggers > ArrayIndexOutOfBoundsException. SSLEngineImpl catches this runtime exception > and reports a fatal SSLException; it does not establish a JVM crash. > > Expected behavior the inconsistent handshake metadata must be rejected as a > protocol error before fragment reassembly. > > --------- > - [x] I confirm that I make this contribution in accordance with the [OpenJDK > Interim AI Policy](https://openjdk.org/legal/ai). Hi @Sovtouch! Please add a regression unit test demonstrating `ArrayIndexOutOfBoundsException` ------------- PR Comment: https://git.openjdk.org/jdk/pull/33633#issuecomment-6498860121
