From 3d8ca3c52602f1bd019786a03be7a614adc82181 Mon Sep 17 00:00:00 2001
From: Marius van der Wijden <m.vanderwijden@live.de>
Date: Wed, 26 Jun 2024 11:11:18 +0200
Subject: [PATCH] core/vm: check for returnStack overflow in opCallf

---
 core/vm/eips.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/vm/eips.go b/core/vm/eips.go
index cb4851e32f..dcb4943669 100644
--- a/core/vm/eips.go
+++ b/core/vm/eips.go
@@ -823,6 +823,9 @@ func opCallf(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]by
 	if scope.Stack.len()+int(typ.MaxStackHeight) >= 1024 {
 		return nil, fmt.Errorf("stack overflow")
 	}
+	if len(scope.ReturnStack) >= 1024 {
+		return nil, fmt.Errorf("return stack overflow")
+	}
 	retCtx := &ReturnContext{
 		Section:     scope.CodeSection,
 		Pc:          *pc + 3,