Comment 19 for bug 90085

In shared hosting environments, even root may not have control over mount points, so "Don't do that" and "noexec is useless" are not useful replies.

  APT::ExtractTemplates::TempDir "/var/tmp";

Is useful, however. Thank you, Hans. (In my case, /var/tmp is also noexec, but I can set it to something else completely.)