Messages in this thread |  | | | From | Andy Lutomirski <> | | Date | Tue, 17 Jan 2012 08:31:58 -0800 | | Subject | Re: [PATCH 4/4] Allow unprivileged chroot when safe |
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On Tue, Jan 17, 2012 at 8:23 AM, Oleg Nesterov <oleg@redhat.com> wrote: > On 01/15, Andy Lutomirski wrote: >> >> Chroot can easily be used to subvert setuid programs. If no_new_privs, >> then setuid programs don't gain any privilege, so allow chroot. >> >> ... >> >> + if (!(current->no_new_privs && !is_chrooted) && >> + !capable(CAP_SYS_CHROOT)) > > I must have missed something. How no_new_privs can help if fs->users != 1 ?
Whoops. That needs fixing.
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