There's a race condition (TOCTOU) between losetup --find
and applying the obtained path after additional dd in between;
twice awful as *at least* running both losetups closely would
reduce the window significantly, and reading the manpage
properly back then would eliminate this.
Reported-by: Anton Midyukov <antohami@altlinux.org>
Suggested-by: Gleb F-Malinovskiy <glebfm@altlinux.org>