From 3da6b8364e767073608d6a63ffefad6c5904ac79 Mon Sep 17 00:00:00 2001
From: Guido Vranken <guidovranken@gmail.com>
Date: Thu, 28 Jan 2021 18:53:35 +0100
Subject: [PATCH] Prevent dangling pointer in TLSX_Cookie_Use

ZD 11603
---
 src/tls.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/tls.c b/src/tls.c
index d11472115..0df44fc9b 100644
--- a/src/tls.c
+++ b/src/tls.c
@@ -6374,6 +6374,9 @@ int TLSX_Cookie_Use(WOLFSSL* ssl, byte* data, word16 len, byte* mac,
     if (mac != NULL)
         XMEMCPY(&cookie->data + len, mac, macSz);
 
+    if (extension->data != NULL)
+        XFREE(extension->data, ssl->heap, DYNAMIC_TYPE_TLSX);
+
     extension->data = (void*)cookie;
     extension->resp = (byte)resp;