@Andy -- that depends on whether we consider the kernel part of this a
bug or not.

For lxc it'll be fixed with an apparmor policy shipped with lxc.

For update-binfmts more generally,  there might be  way for that program
to be smarter.

But still the kernel itself is reading over proc and/or sys files, so
there's the question of how far we go to protect the admin from himself.


My take right now:  the container admin may be separate from the host
admin, so we need the lxc policy.  For the rest, update-binfmts and the
kernel part can only be used by the host admin, so we let him shoot
himself in the foot.

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https://bugs.launchpad.net/bugs/917660

Title:
  Installing qemu-user-static in an i386 lxc container applies the
  binfmt changes to the host, breaking execution in that host

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