From b28f1e55b7010c1e8754f48a43e85b03afd34059 Mon Sep 17 00:00:00 2001
From: m-Bilal <mohd.bilal1996@gmail.com>
Date: Sat, 27 Nov 2021 19:53:49 +0530
Subject: [PATCH] fixes 4240; added null check on namespace when resource is a
 RoleBinding

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

diff --git a/api/resmap/reswrangler.go b/api/resmap/reswrangler.go
index 31bfe1fee..5a462a6db 100644
--- a/api/resmap/reswrangler.go
+++ b/api/resmap/reswrangler.go
@@ -436,7 +436,9 @@ func getNamespacesForRoleBinding(r *resource.Resource) map[string]bool {
 		if ns, ok1 := subject["namespace"]; ok1 {
 			if kind, ok2 := subject["kind"]; ok2 {
 				if kind.(string) == "ServiceAccount" {
-					result[ns.(string)] = true
+					if n, ok3 := ns.(string); ok3 {
+						result[n] = true
+					}
 				}
 			}
 		}