protocol: one more sanity check on usable data from a peer

3 years ago · 97d3f9d408
parent f4fac80752
commit 97d3f9d408
1 changed files with 1 additions and 1 deletions
--- a/src/cryptonote_protocol/cryptonote_protocol_handler.inl
+++ b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
@ -2528,7 +2528,7 @@ skip:
    }

    uint64_t n_use_blocks = m_core.prevalidate_block_hashes(arg.start_height, arg.m_block_ids, arg.m_block_weights);
-    if (n_use_blocks + HASH_OF_HASHES_STEP <= arg.m_block_ids.size())
+    if (n_use_blocks == 0 || n_use_blocks + HASH_OF_HASHES_STEP <= arg.m_block_ids.size())
    {
      LOG_ERROR_CCONTEXT("Most blocks are invalid, dropping connection");
      drop_connection(context, true, false);