From fe3e7eaa34f6b117e1d0be0328f7832f34f8d207 Mon Sep 17 00:00:00 2001
From: akallabeth <akallabeth@posteo.net>
Date: Tue, 19 May 2020 07:48:07 +0200
Subject: [PATCH] Fixed GHSL-2020-101 missing NULL check

---
 libfreerdp/core/security.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libfreerdp/core/security.c b/libfreerdp/core/security.c
index bce1855c4..e6571c36d 100644
--- a/libfreerdp/core/security.c
+++ b/libfreerdp/core/security.c
@@ -816,6 +816,9 @@ BOOL security_fips_decrypt(BYTE* data, size_t length, rdpRdp* rdp)
 {
 	size_t olen;
 
+	if (!rdp || !rdp->fips_decrypt)
+		return FALSE;
+
 	if (!winpr_Cipher_Update(rdp->fips_decrypt, data, length, data, &olen))
 		return FALSE;