  FT_Sfnt_Table_Info( FT_Face    face,
                      FT_UInt    table_index,
                      FT_ULong  *tag,
                      FT_ULong  *length )
  {
    FT_Service_SFNT_Table  service;
    FT_ULong               offset;


    if ( !face || !FT_IS_SFNT( face ) )
      return FT_Err_Invalid_Face_Handle;

    FT_FACE_FIND_SERVICE( face, service, SFNT_TABLE );
    if ( service == NULL )
      return FT_Err_Unimplemented_Feature;

    return service->table_info( face, table_index, tag, &offset, length );
  }

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.