avifil32: Properly check the required buffer size in AVIFILE_ReadBlock().

4c36e12b · Henri Verbeet · Alexandre Julliard · f5c8153e · 4c36e12b
Commit 4c36e12b authored Jan 04, 2010 by Henri Verbeet Committed by Alexandre Julliard Jan 05, 2010
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avifile.c dlls/avifil32/avifile.c +1 -1

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--- a/dlls/avifil32/avifile.c
+++ b/dlls/avifil32/avifile.c
@@ -2027,7 +2027,7 @@ static HRESULT AVIFILE_ReadBlock(IAVIStreamImpl *This, DWORD pos,
    size += 2 * sizeof(DWORD);

    /* check that buffer is big enough -- don't trust dwSuggestedBufferSize */
-    if (This->lpBuffer == NULL || size < This->cbBuffer) {
+    if (This->lpBuffer == NULL || This->cbBuffer < size) {
      DWORD maxSize = max(size, This->sInfo.dwSuggestedBufferSize);

      if (This->lpBuffer == NULL)