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Check for overflow before addition in analysisOfVariance function #54385

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merged 1 commit into from Sep 7, 2023
Merged

Check for overflow before addition in analysisOfVariance function #54385

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4 changes: 4 additions & 0 deletions src/AggregateFunctions/Moments.h
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Expand Up @@ -459,6 +459,10 @@ struct AnalysisOfVarianceMoments

void add(T value, size_t group)
{
if (group == std::numeric_limits<size_t>::max())
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Too many groups for analysis of variance (should be no more than {}, got {})",
MAX_GROUPS_NUMBER, group);

resizeIfNeeded(group + 1);
xs1[group] += value;
xs2[group] += value * value;
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Empty file added tests/queries/0_stateless/02874_analysis_of_variance_overflow.reference
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1 change: 1 addition & 0 deletions tests/queries/0_stateless/02874_analysis_of_variance_overflow.sql
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@@ -0,0 +1 @@
SELECT analysisOfVariance(1, 18446744073709551615); -- { serverError BAD_ARGUMENTS }