Overview
- The Sui mainnet stopped finalizing transactions during a stall that began on May 28 and ran into May 29 because a crash bug in the 1.72 release’s gas charging logic blocked checkpoint and block production.
- Engineers first deployed an interim fix that briefly restored service but had a low‑probability flaw that produced a second halt the following day when a variant of the issue reappeared.
- Validators coordinated and rolled out a long‑term patched upgrade, and normal network finality resumed only after more than two‑thirds of the staked validator weight upgraded to the corrected binary.
- Sui’s team said no user funds were lost thanks to built‑in safety measures, but the SUI token fell roughly 5–8% during the outage window and finished the week with larger losses as traders reacted.
- The incident is the latest in a string of multi‑hour stalls for Sui and focuses attention on how software interactions—specifically Address Balances with gas charging—and validator upgrade processes are tested and governed going forward.