Add a size limit for tx_extra in tx pool

2 files changed, 11 insertions, 0 deletions

diff --git a/src/cryptonote_core/cryptonote_tx_utils.cpp b/src/cryptonote_core/cryptonote_tx_utils.cpp
index bf58a120d..5058b89a9 100644
--- a/src/cryptonote_core/cryptonote_tx_utils.cpp
+++ b/src/cryptonote_core/cryptonote_tx_utils.cpp
@@ -437,6 +437,8 @@ namespace cryptonote
     if (!sort_tx_extra(tx.extra, tx.extra))
       return false;
 
+    CHECK_AND_ASSERT_MES(tx.extra.size() <= MAX_TX_EXTRA_SIZE, false, "TX extra size (" << tx.extra.size() << ") is greater than max allowed (" << MAX_TX_EXTRA_SIZE << ")");
+
     //check money
     if(summary_outs_money > summary_inputs_money )
     {
diff --git a/src/cryptonote_core/tx_pool.cpp b/src/cryptonote_core/tx_pool.cpp
index 2a514ceae..359ded875 100644
--- a/src/cryptonote_core/tx_pool.cpp
+++ b/src/cryptonote_core/tx_pool.cpp
@@ -219,6 +219,15 @@ namespace cryptonote
       return false;
     }
 
+    size_t tx_extra_size = tx.extra.size();
+    if (!kept_by_block && tx_extra_size > MAX_TX_EXTRA_SIZE)
+    {
+      LOG_PRINT_L1("transaction tx-extra is too big: " << tx_extra_size << " bytes, the limit is: " << MAX_TX_EXTRA_SIZE);
+      tvc.m_verifivation_failed = true;
+      tvc.m_tx_extra_too_big = true;
+      return false;
+    }
+
     // if the transaction came from a block popped from the chain,
     // don't check if we have its key images as spent.
     // TODO: Investigate why not?