opWriteConcernCounters can illegally embed a NUL bytes into ServerStatus

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    • Type: Bug
    • Resolution: Fixed
    • Priority: Major - P3
    • 5.0 Required, 8.2.0-rc0
    • Affects Version/s: None
    • Component/s: None
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    • Replication
    • ALL
    • v8.1, v8.0, v7.0
    • Repl 2025-05-12, Repl 2025-05-26, Repl 2025-06-09, Repl 2025-06-23
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    • 3
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      As seen in HELP-73786 it is possible for the opWriteConcernCounters to embed a NUL byte value into the ServerStatus response (specifically into a string field which can cause a node to go down. We need to find the root cause of this issue and prevent it from happening.

      max.hirschhorn@mongodb.com identified that wTagCounts is a likely source of this error since it could relate to custom write concern tags provided by users

      This issue has been seen back to 7.0

            Assignee:
            Brad Cater
            Reporter:
            Sean Zimmerman
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              Created:
              Updated:
              Resolved: