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c4-002 Wrong crLiquidation cap in overdue liquidation #119

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Jul 15, 2024
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c4-002 Wrong crLiquidation cap in overdue liquidation #119

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6 changes: 3 additions & 3 deletions src/libraries/actions/Liquidate.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -99,13 +99,13 @@ library Liquidate {
);
liquidatorProfitCollateralToken = debtInCollateralToken + liquidatorReward;

// split the remaining collateral between the protocol and the borrower, capped by the crLiquidation
// the protocol earns a portion of the collateral remainder
uint256 collateralRemainder = assignedCollateral - liquidatorProfitCollateralToken;

// cap the collateral remainder to the liquidation collateral ratio
// cap the collateral remainder to FV * (1 - crLiquidation)
// otherwise, the split for non-underwater overdue loans could be too much
uint256 collateralRemainderCap =
Math.mulDivDown(debtInCollateralToken, state.riskConfig.crLiquidation, PERCENT);
Math.mulDivDown(debtInCollateralToken, state.riskConfig.crLiquidation - PERCENT, PERCENT);

collateralRemainder = Math.min(collateralRemainder, collateralRemainderCap);

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