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  1. Core Server
  2. SERVER-89316

Coverity analysis defect 140316: Out-of-bounds read

    • Storage Execution
    • Fully Compatible
    • ALL
    • Execution Team 2024-04-29

      Out-of-bounds read

      Incorrect values read from a different memory region will cause incorrect computations. Out-of-bounds read from a buffer
      /src/mongo/db/storage/key_string.cpp:946: OVERRUN 140316 Function call "mongo::countLeadingZeros64(integerPart << 1)" may return 64.
      /src/mongo/db/storage/key_string.cpp:946: OVERRUN 140316 Assigning: "fractionalBytes" = "mongo::countLeadingZeros64(integerPart << 1) / 8". The value of "fractionalBytes" is now 8.
      /src/mongo/db/storage/key_string.cpp:953: OVERRUN 140316 Overrunning array "mongo::key_string::<unnamed>::kPow256" of 8 8-byte elements at element index 8 (byte offset 71) using index "fractionalBytes" (which evaluates to 8).

            Assignee:
            wei.hu@mongodb.com Wei Hu
            Reporter:
            xgen-internal-coverity Coverity Collector User
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              Created:
              Updated:
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