Submission Details
Severity:
AntiMomentumUpdateRule allow invalid weights in scalar kappa mode
Summary
Inconsistent validation in AntiMomentumUpdateRule where negative weight check is only present in vector kappa mode but missing in scalar kappa mode.
Impact
Low. The code is inconsistent, alloing negative invalid weights.
Recommendation
Add require(res >= 0, "Invalid weight") in scalar kappa path to maintain consistent validation patterns:
if (locals.kappa.length == 1) {
locals.normalizationFactor /= int256(_prevWeights.length);
for (locals.i = 0; locals.i < _prevWeights.length; ) {
int256 res = int256(_prevWeights[locals.i]) +
int256(locals.kappa[0]).mul(locals.normalizationFactor - locals.newWeights[locals.i]);
require(res >= 0, "Invalid weight"); // Add this line
newWeightsConverted[locals.i] = res;
unchecked { ++locals.i; }
}
}
Updates
Lead Judging Commences
n0kto 5 months ago
Submission Judgement Published Reason: Incorrect statement
Assigned finding tags:
invalid_weights_can_be_negative_or_extreme_values
_clampWeights will check that these weights are positive and in the boundaries before writing them in storage.
Appeal created
0xtheblackpanther
5 months ago
n0kto
5 months ago
n0kto 4 months ago
Submission Judgement Published Reason: Incorrect statement
Assigned finding tags:
invalid_weights_can_be_negative_or_extreme_values
_clampWeights will check that these weights are positive and in the boundaries before writing them in storage.
Prize pool breakdown
Total prize
49,600 OP
nSLOC
3,00017 OP / LOC
44,640
4,960
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