(HAL-17) BRIDGE SERVICE STUCK WHILE POLLING SIMULTANEOUS EVENTS

[SA124]

(HAL-17) BRIDGE SERVICE STUCK WHILE POLLING SIMULTANEOUS EVENTS

Auditor: Halborn
Severity: Medium

Description
The blockchain service's poll_next_event function may enter a deadlock state, returning Pending indefinitely even when events are available for processing, essentially freezing the bridge.

The issue stems from the simultaneous polling of initiator and counterparty events:

BVSS
AO:A/AC:L/AX:L/R:P/S:U/C:N/A:C/I:N/D:C/Y:N (6.3)

Recommendation
It is recommended to handle the case where both events are polled.

[0xmovses]

This logic has been refactored and the issue no longer exists, cc. @musitdev