Assessment reportsPublic findings
Back to Zellic site
↗
Assessment reports>Suilend>Threat Model>Function compound_interest
GeneralOverview
Findings
Medium (2)
DiscussionUse of APR in configurationLiquidate maximum percentage is weightedDesync between reserve and obligation interest
Threat ModelWhat are threat models?1-lending_market
3-reserveBasic functionFunction update_reserve_configFunction update_priceFunction compound_interestFunction claim_feesFunction deposit_liquidity_and_mint_ctokensFunction redeem_ctokensFunction borrow_liquidityFunction repay_liquidityFunction deposit_ctokensFunction withdraw_ctokens
4-obligation
Audit ResultsSummary

Function compound_interest

This function calculates the compound interest at the current time. This works by maintaining an internal cumulative interest rate tracker. The function converts the interest into the interest rate by the second, then compounds it based on the number of seconds that has passed since the last update to the cumulative interest rate. The change in the cumulative interest rate is then applied to the assets in the reserve. This function also calculates the amount of new debt, and a portion of that new debt is turned into spread fees for the protocol based on the configured rate.

Zellic © 2025Back to top ↑