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  1. Core Server
  2. SERVER-36546

Buffer overflow in WTUniqueIndex cursor restore

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    Details

    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL
    • Sprint:
      Storage Engines 2018-08-13
    • Linked BF Score:
      58

      Description

      A unique index cursor restore could return a key shorter than the current key. I such a case comparing  the current key with the restored key could cause a buffer overflow.

      The evergreen run reporting this memory leak:

      https://evergreen.mongodb.com/task/mongodb_mongo_master_ubuntu1604_debug_aubsan_async_sharding_op_query_4e57f57add2ad51a1c8cafd3fa05ec50b6437797_18_08_06_05_51_51/0

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              • Created:
                Updated:
                Resolved: