From 5389e3fe01cdfdc91655cf53713399ed86cc75e3 Mon Sep 17 00:00:00 2001
From: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Date: Wed, 25 Jun 2025 23:06:59 +0000
Subject: [PATCH] demos/cms/cms_denc.c: Add check for BIO_new_file()

Add check for the return value of BIO_new_file().

Fixes: 1728756 ("Detached encrypt/decrypt example, fix decrypt sample.")
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>

Reviewed-by: Paul Dale <ppzgs1@gmail.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/27897)

(cherry picked from commit 881ff0c225356a0f28bd55cea5a4c5204b7b7b8a)
---
 demos/cms/cms_denc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/demos/cms/cms_denc.c b/demos/cms/cms_denc.c
index 60b0aa192bc..45d18dc7a4d 100644
--- a/demos/cms/cms_denc.c
+++ b/demos/cms/cms_denc.c
@@ -57,7 +57,7 @@ int main(int argc, char **argv)
 
     dout = BIO_new_file("smencr.out", "wb");
 
-    if (!in)
+    if (in == NULL || dout == NULL)
         goto err;
 
     /* encrypt content */
-- 
2.47.2