From: Pierre Schweitzer <pierre@reactos.org>
Date: Sat, 14 Oct 2017 21:19:12 +0000 (+0200)
Subject: [KERNEL32] Use proper size for allocating buffer in GetVolumeInformationA(). This... 
X-Git-Tag: 0.4.8-dev~104
X-Git-Url: https://git.reactos.org/?p=reactos.git;a=commitdiff_plain;h=dc8bfeabcffeaf2bcdc6907af1313e7a7866314e

[KERNEL32] Use proper size for allocating buffer in GetVolumeInformationA(). This was leading to allocate a too small buffer under certain conditions and to overrun it.
This fixes JRE7 setup.
This regression was brought in by r75969.

CORE-13888
---

diff --git a/dll/win32/kernel32/client/file/volume.c b/dll/win32/kernel32/client/file/volume.c
index e59c291b67f..90016b8e086 100644
--- a/dll/win32/kernel32/client/file/volume.c
+++ b/dll/win32/kernel32/client/file/volume.c
@@ -87,7 +87,7 @@ GetVolumeInformationA(IN LPCSTR lpRootPathName,
     /* If caller wants file system name, allocate a buffer to receive it */
     if (lpFileSystemNameBuffer != NULL)
     {
-        FileSystemNameU.MaximumLength = sizeof(WCHAR) * (nVolumeNameSize + 1);
+        FileSystemNameU.MaximumLength = sizeof(WCHAR) * (nFileSystemNameSize + 1);
         FileSystemNameU.Buffer = RtlAllocateHeap(RtlGetProcessHeap(), 0,
 	                                             FileSystemNameU.MaximumLength);
         if (FileSystemNameU.Buffer == NULL)