From 57ea1cdcd7013a0071100107b577e4ca0b8c4da0 Mon Sep 17 00:00:00 2001
From: Jacob Barthelmeh <jacob@wolfssl.com>
Date: Fri, 25 Mar 2016 11:32:53 -0600
Subject: [PATCH] sanity check on ssl pased to wolfSSL_set_fd

---
 src/ssl.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/ssl.c b/src/ssl.c
index 4e9b87fd3..0ca464ffe 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -255,6 +255,11 @@ int wolfSSL_use_old_poly(WOLFSSL* ssl, int value)
 int wolfSSL_set_fd(WOLFSSL* ssl, int fd)
 {
     WOLFSSL_ENTER("SSL_set_fd");
+
+    if (ssl == NULL) {
+        return BAD_FUNC_ARG;
+    }
+
     ssl->rfd = fd;      /* not used directly to allow IO callbacks */
     ssl->wfd = fd;