From 2c08967d7ab1e5f8f94a074e5520cd21d33df9d7 Mon Sep 17 00:00:00 2001
From: Carlos Rodriguez <carlos@interchain.io>
Date: Thu, 29 Aug 2024 14:52:35 +0200
Subject: [PATCH] fix: prevent out of bounds on lookup inners access

---
 go/compress.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/go/compress.go b/go/compress.go
index 173e7c87..d1d7f790 100644
--- a/go/compress.go
+++ b/go/compress.go
@@ -153,7 +153,9 @@ func decompressExist(exist *CompressedExistenceProof, lookup []*InnerOp) *Existe
 		Path:  make([]*InnerOp, len(exist.Path)),
 	}
 	for i, step := range exist.Path {
-		res.Path[i] = lookup[step]
+		if int(step) < len(lookup) {
+			res.Path[i] = lookup[step]
+		}
 	}
 	return res
 }