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MongoDB | 2636716
Data race on ReplicaSetMonitorManager::_stats
Last update date:
4/9/2024
Affected products:
MongoDB Server
Affected releases:
No affected releases provided.
Fixed releases:
No fixed releases provided.
Description:
Info
The ReplicaSetMonitorManager::_stats member can be concurrently accessed from different threads without synchronization, i.e. via report() where it is read without synchronization. This member has type shared_ptr - note that while the pointed-to object is thread-safe/synchronized, the shared_ptr object itself still requires synchronization, and cannot be accessed concurrently by different threads (one of which writes/mutates it) without additional synchronization. We should fix it by either gating access with the ReplicaSetMonitorManager::_mutex or using the new c++20 atomic
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