bool SharedMemory::ShareToProcessCommon(ProcessHandle process,
                                        SharedMemoryHandle *new_handle,
                                        bool close_self) {
  *new_handle = 0;
  DWORD access = STANDARD_RIGHTS_REQUIRED | FILE_MAP_READ;
  DWORD options = 0;
  HANDLE mapped_file = mapped_file_;
  HANDLE result;
  if (!read_only_)
    access |= FILE_MAP_WRITE;
  if (close_self) {
    options = DUPLICATE_CLOSE_SOURCE;
    mapped_file_ = NULL;
    Unmap();
  }

  if (process == GetCurrentProcess() && close_self) {
    *new_handle = mapped_file;
    return true;
  }

  if (!DuplicateHandle(GetCurrentProcess(), mapped_file, process,
      &result, access, FALSE, options))
    return false;
  *new_handle = result;
  return true;
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.