From 9eeddf973b170d298a0f25bf384b89223373ff1f Mon Sep 17 00:00:00 2001
From: Lukasz Klimek <842586+lklimek@users.noreply.github.com>
Date: Wed, 13 Mar 2024 14:37:57 +0100
Subject: [PATCH] fix(consensus): invalid block height gossiped to lagging peer

---
 internal/consensus/gossip_handlers.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/internal/consensus/gossip_handlers.go b/internal/consensus/gossip_handlers.go
index d9bddb8c8c..deaf9060ca 100644
--- a/internal/consensus/gossip_handlers.go
+++ b/internal/consensus/gossip_handlers.go
@@ -117,9 +117,14 @@ func shouldProposalBeGossiped(rs cstypes.RoundState, prs *cstypes.PeerRoundState
 }
 
 func shouldBlockPartsBeGossiped(rs cstypes.RoundState, prs *cstypes.PeerRoundState, isValidator bool) bool {
+	if rs.Height != prs.Height || rs.Round < prs.Round {
+		return false
+	}
+
 	if isValidator && rs.ProposalBlockParts.HasHeader(prs.ProposalBlockPartSetHeader) {
 		return true
 	}
+
 	return prs.HasCommit && rs.ProposalBlockParts != nil
 }