Submission Details
Severity:
skew and openInterest for a market will be completely incorrect after liquidation
Description
In the liquidateAccounts function, the skew and openInterest instead of getting recalculated and updated are being set to zero [reference]
// ctx.newOpenInterestX18 and ctx.newSkewX18 are never initialized with any value
perpMarket.updateOpenInterest(ctx.newOpenInterestX18, ctx.newSkewX18);
Also the assumption open interest and skew are both decreased by liquidations [ref] is incorrect as the skew can increase by liquidation!
Recommendation
Calculate the new openInterest and skew values, and update it.
Updates
Lead Judging Commences
inallhonesty 11 months ago
Submission Judgement Published Assigned finding tags:
`liquidateAccounts` calls `updateOpenInterest` with uninitialized OI and skew)
Prize pool breakdown
Total prize
60,000 USDC
nSLOC
2,87821 USDC / LOC
50,000 USDC
5,500 USDC
4,500 USDC
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