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Dmitry G. Gorbachev (hto at mail cnt dot ru):

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NtOpenKey() calls ObpCaptureObjectAttributes() which can return null
ObjectName.

Then null pointer used in
 if (ObjectName.Buffer[(ObjectName.Length / sizeof(WCHAR)) - 1] == '\\')
which leads to a crash.

svn path=/trunk/; revision=25332
This commit is contained in:
Aleksey Bragin 2007-01-06 19:14:41 +00:00
parent 01ff2d0170
commit a227f30dac
1 changed files with 2 additions and 1 deletions
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3
reactos/ntoskrnl/cm/ntfunc.c
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@ -1367,7 +1367,8 @@ NtOpenKey(OUT PHANDLE KeyHandle,
return Status;
}
if (ObjectName.Buffer[(ObjectName.Length / sizeof(WCHAR)) - 1] == '\\')
if (ObjectName.Buffer &&
ObjectName.Buffer[(ObjectName.Length / sizeof(WCHAR)) - 1] == '\\')
{
ObjectName.Buffer[(ObjectName.Length / sizeof(WCHAR)) - 1] = UNICODE_NULL;
ObjectName.Length -= sizeof(WCHAR);