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wallet2: check for overflow when calculating fee from weight

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selsta
2026-07-26 22:03:09 +02:00
parent d85cfa04d8
commit e2a4f68ef6
1 changed files with 2 additions and 0 deletions
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src/wallet/wallet2.cpp
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@@ -306,6 +306,8 @@ uint64_t calculate_fee(uint64_t fee_per_kb, size_t bytes)
uint64_t calculate_fee_from_weight(uint64_t base_fee, uint64_t weight, uint64_t fee_quantization_mask) uint64_t calculate_fee_from_weight(uint64_t base_fee, uint64_t weight, uint64_t fee_quantization_mask)
{ {
THROW_WALLET_EXCEPTION_IF(base_fee != 0 && weight > std::numeric_limits<uint64_t>::max() / base_fee,
tools::error::wallet_internal_error, "Fee calculation overflow");
uint64_t fee = weight * base_fee; uint64_t fee = weight * base_fee;
fee = (fee + fee_quantization_mask - 1) / fee_quantization_mask * fee_quantization_mask; fee = (fee + fee_quantization_mask - 1) / fee_quantization_mask * fee_quantization_mask;
return fee; return fee;