There is an ongoing issue due to this TOCTOU bug where scores (with identical checksums) may submit more than a single time (and award duplicate pp/score/etc.) if multiple get between the start and end conditions simultaneously.
This change adds a concurrency lock around the affected area to ensure only one runs at a time.
cmyui
commented
5 months ago
Describe your changes
There is an ongoing issue due to this TOCTOU bug where scores (with identical checksums) may submit more than a single time (and award duplicate pp/score/etc.) if multiple get between the start and end conditions simultaneously.
This change adds a concurrency lock around the affected area to ensure only one runs at a time.
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