Sui network stalls again after same software bug resurfaces
In brief
- Sui network stalled Friday due to same software bug causing Thursday's six-hour outage
- Friday disruption lasted over three hours before block production resumed
- Validators deployed long-term fix to prevent recurrence
Friday's Disruption
The Friday network disruption lasted for over three hours and 30 minutes at the time of publication. The last block before the disruption was produced at about 11:51 UTC, and network activity on the Sui mainnet resumed at about 3:30 UTC.
The recurrence underscores fragility in Sui's recent updates. The interim fix had a "low probability" of causing a network disruption, yet the same bug resurfaced within hours of Thursday's incident.
Pattern of Outages
The Thursday crash was the second major network disruption in 2026. In January, the Sui network went offline for over six hours due to a consensus bug, when validators submitted conflicting transactions to the protocol's checkpoint mechanism.
User funds were never at risk during the January disruption, and no "certified transactions" were rolled back.
Long-Term Fix Deployed
The long-term software fix has been implemented by a majority of Sui validators. The Sui team stated the interim fix carried low risk, but the back-to-back outages suggest more rigorous testing may be needed before deploying network-wide updates.
