From 2c2f389373fa9dcdafc7a9059a3c73ab10bb0370 Mon Sep 17 00:00:00 2001
From: Jacob Barthelmeh <jacob@wolfssl.com>
Date: Thu, 6 May 2021 12:11:52 +0700
Subject: [PATCH] set pointer to null after free

---
 src/ssl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ssl.c b/src/ssl.c
index 8cc83d6ca..53d038a5d 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -54610,6 +54610,7 @@ WOLFSSL_API PKCS7* wolfSSL_SMIME_read_PKCS7(WOLFSSL_BIO* in,
 
 
             wc_MIME_free_hdrs(allHdrs);
+            allHdrs = NULL;
             section[0] = '\0';
             sectionLen = 0;
             lineLen = wolfSSL_BIO_gets(in, section, remainLen);
@@ -54721,6 +54722,7 @@ WOLFSSL_API PKCS7* wolfSSL_SMIME_read_PKCS7(WOLFSSL_BIO* in,
 
 
     wc_MIME_free_hdrs(allHdrs);
+    allHdrs = NULL;
     XFREE(outHead, NULL, DYNAMIC_TYPE_PKCS7);
     XFREE(section, NULL, DYNAMIC_TYPE_PKCS7);
 
@@ -54729,6 +54731,7 @@ WOLFSSL_API PKCS7* wolfSSL_SMIME_read_PKCS7(WOLFSSL_BIO* in,
 
 error:
     wc_MIME_free_hdrs(allHdrs);
+    allHdrs = NULL;
     XFREE(boundary, NULL, DYNAMIC_TYPE_PKCS7);
     XFREE(outHead, NULL, DYNAMIC_TYPE_PKCS7);
     XFREE(section, NULL, DYNAMIC_TYPE_PKCS7);