From 648f2c1d82cec21e613fe2aba64fc44355af73cc Mon Sep 17 00:00:00 2001
From: Nicolas Vazquez <nicovazquez90@gmail.com>
Date: Fri, 4 Mar 2022 23:26:19 -0300
Subject: [PATCH] Fix NPE on CIDR list check (#6053)

---
 utils/src/main/java/com/cloud/utils/net/NetUtils.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/utils/src/main/java/com/cloud/utils/net/NetUtils.java b/utils/src/main/java/com/cloud/utils/net/NetUtils.java
index feaac8f7f8b..b87292aecb5 100644
--- a/utils/src/main/java/com/cloud/utils/net/NetUtils.java
+++ b/utils/src/main/java/com/cloud/utils/net/NetUtils.java
@@ -1182,6 +1182,9 @@ public class NetUtils {
     }
 
     public static boolean isValidCidrList(final String cidrList) {
+        if (StringUtils.isBlank(cidrList)) {
+            return false;
+        }
         for (final String guestCidr : cidrList.split(",")) {
             if (!isValidIp4Cidr(guestCidr)) {
                 return false;