Security Enhancements

Security audit of fixes and enhancements applied to the Granite core-v1 lending protocol on Stacks, covering arithmetic safety, cross-contract cascade prevention, staking finalization ordering, accrual integrity, and governance hardening.

This engagement reviewed security enhancements applied to the protocol's core contracts following a previous security review. The changes touched borrowing, liquidation, staking, flash loans, governance, LP incentives, interest rate modeling, oracle integration, and withdrawal cap logic. Key areas of focus included:

• Arithmetic safety fixes addressing underflow and overflow risks in staking slashes, liquidation accounting, and interest rate accrual
• Cross-contract cascade prevention in the liquidation pipeline to stop cascading reverts from propagating across independent operations
• Staking module hardening around the wipe-out lifecycle: detection of staking depletion via bad-debt socialization, post-wipe LP token leak prevention, and withdrawal queue finalization under edge conditions
• Governance contract fixes for snapshot-based voting thresholds and member count handling across proposal lifecycle operations
• Oracle adapter updates, withdrawal cap refinements, and flash loan access control improvements