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πŸ›‘οΈ Sentinel: [MEDIUM] Fix AsyncLogger DoS vulnerability#109

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sentinel/fix-async-logger-dos-16934021745871608156
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πŸ›‘οΈ Sentinel: [MEDIUM] Fix AsyncLogger DoS vulnerability#109
TECHNICANGEL wants to merge 1 commit intomasterfrom
sentinel/fix-async-logger-dos-16934021745871608156

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This PR addresses a potential Denial of Service (DoS) vulnerability in the AsyncLogger class by enforcing a maximum queue size.

Changes:

  • src/AsyncLogger.h:
    • Added MAX_QUEUE_SIZE constant (10000).
    • Added queueFullWarning atomic flag.
    • Modified log() to drop messages if the queue is full and print a warning to std::cerr.
    • Modified processQueue() to reset the warning flag when the queue is drained.
  • src/main.cpp:
    • Removed duplicate declarations of currentFPS and frameTimeMs to fix a compilation error that blocked verification.

This aligns with the Sentinel security mandate to prevent resource exhaustion vulnerabilities.


PR created automatically by Jules for task 16934021745871608156 started by @TECHNICANGEL

🚨 Severity: MEDIUM
πŸ’‘ Vulnerability: Unbounded `std::queue` in `AsyncLogger` could lead to memory exhaustion (DoS) under high load.
🎯 Impact: Application crash due to OOM if logging produces messages faster than the worker thread can consume them.
πŸ”§ Fix:
- Added `MAX_QUEUE_SIZE = 10000` to `AsyncLogger`.
- Implemented logic to drop messages when queue is full.
- Added thread-safe warning using `std::atomic` to alert on stderr when dropping occurs (only once per saturation event).
- Fixed a compilation error in `src/main.cpp` (duplicate member variables) to enable build verification.
βœ… Verification:
- `cmake --build .` passes.
- Verified logic in `AsyncLogger.h`.

Co-authored-by: TECHNICANGEL <197574689+TECHNICANGEL@users.noreply.github.com>
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@TECHNICANGEL TECHNICANGEL deleted the sentinel/fix-async-logger-dos-16934021745871608156 branch February 23, 2026 15:15
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