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  1. JDK
  2. JDK-8296507

GCM using more memory than necessary with in-place operations

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    • Bug
    • Resolution: Fixed
    • P2
    • 20
    • 18, 19
    • security-libs

    Description

      With the addition of the AVX512 intrinsic that combined gctr and ghash operations, caused a check for in-place operations to require a new buffer for decryption to avoid complications with tag mismatches. This below mail thread and test showed that TLS, who uses in-place byte[] or heap bytebuffers can drive up memory usage when the system. Direct ByteBuffers are unaffected as the intrinsic does not call them directly.

      https://mail.openjdk.org/pipermail/security-dev/2022-October/032723.html
      https://mail.openjdk.org/pipermail/security-dev/2022-November/032757.html

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              ascarpino Anthony Scarpino
              ascarpino Anthony Scarpino
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                Updated:
                Resolved: