diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/policy/policy.h | 4 | ||||
| -rw-r--r-- | src/validation.cpp | 5 |
2 files changed, 3 insertions, 6 deletions
diff --git a/src/policy/policy.h b/src/policy/policy.h index 29764ea2d9..8a26e70ef4 100644 --- a/src/policy/policy.h +++ b/src/policy/policy.h @@ -25,8 +25,8 @@ static constexpr unsigned int DEFAULT_BLOCK_MAX_WEIGHT{MAX_BLOCK_WEIGHT - 4000}; static constexpr unsigned int DEFAULT_BLOCK_MIN_TX_FEE{1000}; /** The maximum weight for transactions we're willing to relay/mine */ static constexpr unsigned int MAX_STANDARD_TX_WEIGHT{400000}; -/** The minimum non-witness size for transactions we're willing to relay/mine (1 segwit input + 1 P2WPKH output = 82 bytes) */ -static constexpr unsigned int MIN_STANDARD_TX_NONWITNESS_SIZE{82}; +/** The minimum non-witness size for transactions we're willing to relay/mine: one larger than 64 */ +static constexpr unsigned int MIN_STANDARD_TX_NONWITNESS_SIZE{65}; /** Maximum number of signature check operations in an IsStandard() P2SH script */ static constexpr unsigned int MAX_P2SH_SIGOPS{15}; /** The maximum number of sigops we're willing to relay/mine in a single tx */ diff --git a/src/validation.cpp b/src/validation.cpp index 76bea97341..15d72c903a 100644 --- a/src/validation.cpp +++ b/src/validation.cpp @@ -690,10 +690,7 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws) return state.Invalid(TxValidationResult::TX_NOT_STANDARD, reason); } - // Do not work on transactions that are too small. - // A transaction with 1 segwit input and 1 P2WPHK output has non-witness size of 82 bytes. - // Transactions smaller than this are not relayed to mitigate CVE-2017-12842 by not relaying - // 64-byte transactions. + // Transactions smaller than 65 non-witness bytes are not relayed to mitigate CVE-2017-12842. if (::GetSerializeSize(tx, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) < MIN_STANDARD_TX_NONWITNESS_SIZE) return state.Invalid(TxValidationResult::TX_NOT_STANDARD, "tx-size-small"); |