From 4775b513f9c0c4d07eff68d64959b8d2174d1324 Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Fri, 16 Jul 2021 13:49:14 +0300
Subject: [PATCH] native: do proper error handling when deserializing user data

---
 pkg/core/native/oracle.go | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/pkg/core/native/oracle.go b/pkg/core/native/oracle.go
index 7c500f6cf..624346fa8 100644
--- a/pkg/core/native/oracle.go
+++ b/pkg/core/native/oracle.go
@@ -277,11 +277,13 @@ func (o *Oracle) FinishInternal(ic *interop.Context) error {
 		}),
 	})
 
-	r := io.NewBinReaderFromBuf(req.UserData)
-	userData := stackitem.DecodeBinary(r)
+	userData, err := stackitem.Deserialize(req.UserData)
+	if err != nil {
+		return err
+	}
 	args := []stackitem.Item{
 		stackitem.Make(req.URL),
-		stackitem.Make(userData),
+		userData,
 		stackitem.Make(resp.Code),
 		stackitem.Make(resp.Result),
 	}