From 33ab901b3f0fd3434df1c7a8023a29b0cfcabc7a Mon Sep 17 00:00:00 2001
From: kaleb-himes <kaleb@wolfssl.com>
Date: Mon, 24 Oct 2016 16:44:43 -0600
Subject: [PATCH] prevent allocation of size 0

---
 src/internal.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/internal.c b/src/internal.c
index 2a5fd3eb7..8df33f987 100755
--- a/src/internal.c
+++ b/src/internal.c
@@ -17564,7 +17564,7 @@ int DoSessionTicket(WOLFSSL* ssl, const byte* input, word32* inOutIdx,
                         #ifndef NO_RSA
                             case rsa_sa_algo:
                             {
-                                if (verifySig == NULL) {
+                                if (verifySig == NULL && ssl->sigLen > 0) {
                                     verifySig = (byte*)XMALLOC(ssl->sigLen, ssl->heap,
                                                       DYNAMIC_TYPE_TMP_BUFFER);
                                     if (!verifySig) {
@@ -17610,7 +17610,7 @@ int DoSessionTicket(WOLFSSL* ssl, const byte* input, word32* inOutIdx,
                                     break;
                                 }
 
-                                if (verifySig == NULL) {
+                                if (verifySig == NULL && ssl->sigLen > 0) {
                                     verifySig = (byte*)XMALLOC(ssl->sigLen, ssl->heap,
                                                       DYNAMIC_TYPE_TMP_BUFFER);
                                     if (!verifySig) {