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[NTOSKRNL] Don't oversize buffer for backtracking in FsRtlIsNameInExpressionPrivate

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CORE-15902
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Bartosz Brachaczek 2019-03-31 11:15:38 +02:00 committed by Pierre Schweitzer
parent 180d7169e6
commit b1ae592e7f
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1 changed files with 1 additions and 1 deletions
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ntoskrnl/fsrtl/name.c
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@ -143,7 +143,7 @@ FsRtlIsNameInExpressionPrivate(IN PUNICODE_STRING Expression,
ASSERT((OldBackTracking == BackTrackingBuffer) || (OldBackTracking == OldBackTrackingBuffer));
/* Calculate buffer size */
BackTrackingBufferSize = (Expression->Length + 1) * 2;
BackTrackingBufferSize = Expression->Length + 1;
/* Allocate memory for both back-tracking buffers */
AllocatedBuffer = ExAllocatePoolWithTag(PagedPool | POOL_RAISE_IF_ALLOCATION_FAILURE,