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[NTOSKRNL] In IopQueryNameInternal() don't copy name if it's not valid

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Pierre Schweitzer 2018-10-03 13:50:16 +02:00
parent 4a7e89770e
commit 46bda8a4c6
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1 changed files with 8 additions and 0 deletions
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8
ntoskrnl/io/iomgr/file.c
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@ -2004,6 +2004,14 @@ IopQueryNameInternal(IN PVOID ObjectBody,
(ULONG_PTR)ObjectNameInfo +
LocalFileInfo->FileNameLength);
/* Don't copy the name if it's not valid */
if (LocalFileInfo->FileName[0] != OBJ_NAME_PATH_SEPARATOR)
{
/* Free the allocated buffer and return failure */
ExFreePoolWithTag(LocalInfo, TAG_IO);
return STATUS_OBJECT_PATH_INVALID;
}
/* Write the Name and null-terminate it */
RtlCopyMemory(p, LocalFileInfo->FileName, FileLength);
p += (FileLength / sizeof(WCHAR));