From 0f39da19d0e40032ddf1a11fedf8a51e191a00ad Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Tue, 13 Oct 2020 18:57:04 +0300
Subject: [PATCH] storage: fix Get for BoltDB, fix #1482

---
 pkg/core/storage/boltdb_store.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkg/core/storage/boltdb_store.go b/pkg/core/storage/boltdb_store.go
index feb0718ea..3f6bfe233 100644
--- a/pkg/core/storage/boltdb_store.go
+++ b/pkg/core/storage/boltdb_store.go
@@ -61,6 +61,12 @@ func (s *BoltDBStore) Get(key []byte) (val []byte, err error) {
 	err = s.db.View(func(tx *bbolt.Tx) error {
 		b := tx.Bucket(Bucket)
 		val = b.Get(key)
+		// Value from Get is only valid for the lifetime of transaction, #1482
+		if val != nil {
+			var valcopy = make([]byte, len(val))
+			copy(valcopy, val)
+			val = valcopy
+		}
 		return nil
 	})
 	if val == nil {