From bae6e075e0412d0a32769aad6041c48bcf60b517 Mon Sep 17 00:00:00 2001
From: Stanislav Motylkov <x86corez@gmail.com>
Date: Wed, 15 Aug 2018 20:43:01 +0300
Subject: [PATCH] [UDMIHELP] Initialize output buffer if DMI string is NULL

---
 sdk/lib/udmihelp/udmihelp.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sdk/lib/udmihelp/udmihelp.c b/sdk/lib/udmihelp/udmihelp.c
index a7070eb33d1..4b9695c4f28 100644
--- a/sdk/lib/udmihelp/udmihelp.c
+++ b/sdk/lib/udmihelp/udmihelp.c
@@ -151,7 +151,13 @@ GetSMBiosStringW(
     SIZE_T cChars;
 
     if (!DmiString)
+    {
+        if (cchBuf >= 1)
+        {
+            *pBuf = 0;
+        }
         return 0;
+    }
 
     cChars = MultiByteToWideChar(CP_OEMCP, 0, DmiString, -1, pBuf, cchBuf);