From 2e307e1cd3cc2a7e8dfb660bb83c6ccfaad636a6 Mon Sep 17 00:00:00 2001
From: Daniel Pouzzner <douzzer@wolfssl.com>
Date: Thu, 2 Jun 2022 10:32:05 -0500
Subject: [PATCH] tls13.c: fix null pointer deref in FreeDcv13Args().

---
 src/tls13.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tls13.c b/src/tls13.c
index 3cee1da6d..67003b0e0 100644
--- a/src/tls13.c
+++ b/src/tls13.c
@@ -6581,7 +6581,7 @@ static void FreeDcv13Args(WOLFSSL* ssl, void* pArgs)
 {
     Dcv13Args* args = (Dcv13Args*)pArgs;
 
-    if (args->sigData != NULL) {
+    if (args && args->sigData != NULL) {
         XFREE(args->sigData, ssl->heap, DYNAMIC_TYPE_SIGNATURE);
         args->sigData = NULL;
     }