From fdd46a5a3f86db9d6d01ab5d2cc4055bf42a992f Mon Sep 17 00:00:00 2001
From: Thomas Holloway <nyxtom@gmail.com>
Date: Mon, 8 Mar 2021 16:06:52 -0600
Subject: [PATCH] Fix netflow decode to handle empty buffer lengths

---
 js/nf9/nf9decode.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/js/nf9/nf9decode.js b/js/nf9/nf9decode.js
index 64eb68e..a354326 100644
--- a/js/nf9/nf9decode.js
+++ b/js/nf9/nf9decode.js
@@ -176,6 +176,9 @@ function nf9PktDecode(msg,rinfo) {
             debug('Unknown template/option data with flowset id %d for %s:%d',fsId,rinfo.address,rinfo.port);
         }
         buf = buf.slice(len);
+        if (len == 0) {
+            break;
+        }
     }
 
     return out;