From: Serge Hallyn <serge.hallyn@ubuntu.com>
To: Kees Cook <keescook@chromium.org>
Cc: "Robert Święcki" <robert@swiecki.net>,
"Ben Hutchings" <ben@decadent.org.uk>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Al Viro" <viro@zeniv.linux.org.uk>,
"Richard Weinberger" <richard@nod.at>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"Andy Lutomirski" <luto@amacapital.net>,
"Dmitry Vyukov" <dvyukov@google.com>,
"David Howells" <dhowells@redhat.com>,
"Kostya Serebryany" <kcc@google.com>,
"Alexander Potapenko" <glider@google.com>,
"Eric Dumazet" <edumazet@google.com>,
"Sasha Levin" <sasha.levin@oracle.com>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
"kernel-hardening@lists.openwall.com"
<kernel-hardening@lists.openwall.com>
Subject: [kernel-hardening] Re: [PATCH 2/2] sysctl: allow CLONE_NEWUSER to be disabled
Date: Sat, 23 Jan 2016 00:44:49 +0000 [thread overview]
Message-ID: <20160123004449.GB23632@ubuntumail> (raw)
In-Reply-To: <CAGXu5jKbroEt0nO=yA4V6esKePseO75tcsK=YVy-=1NEuzwxzQ@mail.gmail.com>
Quoting Kees Cook (keescook@chromium.org):
> On Fri, Jan 22, 2016 at 2:55 PM, Robert Święcki <robert@swiecki.net> wrote:
> > 2016-01-22 23:50 GMT+01:00 Kees Cook <keescook@chromium.org>:
> >
> >>> Seems that Debian and some older Ubuntu versions are already using
> >>>
> >>> $ sysctl -a | grep usern
> >>> kernel.unprivileged_userns_clone = 0
> >>>
> >>> Shall we be consistent wit it?
> >>
> >> Oh! I didn't see that on systems I checked. On which version did you find that?
> >
> > $ uname -a
> > Linux bc1 4.3.0-0.bpo.1-amd64 #1 SMP Debian 4.3.3-5~bpo8+1
> > (2016-01-07) x86_64 GNU/Linux
> > $ cat /etc/debian_version
> > 8.2
>
> Ah-ha, Debian only, though it looks like this was just committed to
> the Ubuntu kernel tree too:
>
>
> > IIRC some older kernels delivered with Ubuntu Precise were also using
> > it (but maybe I'm mistaken)
>
> I don't see it there.
>
> I think my patch is more complete, but I'm happy to change the name if
> this sysctl has already started to enter the global consciousness. ;)
>
> Serge, Ben, what do you think?
Oh, sorry - as for the name of it, what is the alternative you are proposing?
next prev parent reply other threads:[~2016-01-23 0:44 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-22 22:39 [kernel-hardening] [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Kees Cook
2016-01-22 22:39 ` [kernel-hardening] [PATCH 1/2] sysctl: expand use of proc_dointvec_minmax_sysadmin Kees Cook
2016-01-23 3:10 ` [kernel-hardening] " Eric W. Biederman
2016-01-23 22:25 ` Jann Horn
2016-01-24 1:20 ` Eric W. Biederman
2016-01-24 1:43 ` Al Viro
2016-01-24 1:56 ` Jann Horn
2016-01-24 6:02 ` Eric W. Biederman
2016-01-24 6:32 ` Jann Horn
2016-01-24 6:44 ` Eric W. Biederman
2016-01-22 22:39 ` [kernel-hardening] [PATCH 2/2] sysctl: allow CLONE_NEWUSER to be disabled Kees Cook
2016-01-22 22:47 ` [kernel-hardening] " Robert Święcki
2016-01-22 22:50 ` Kees Cook
2016-01-22 22:55 ` Robert Święcki
2016-01-22 23:00 ` Kees Cook
2016-01-23 0:44 ` Serge Hallyn
2016-01-23 0:44 ` Serge Hallyn [this message]
2016-01-23 0:59 ` Ben Hutchings
2016-01-24 20:59 ` Kees Cook
2016-01-24 22:20 ` Andy Lutomirski
2016-01-25 18:51 ` Kees Cook
2016-01-22 22:49 ` [kernel-hardening] Re: [PATCH 0/2] " Richard Weinberger
2016-01-23 3:02 ` Eric W. Biederman
2016-01-24 20:57 ` Kees Cook
2016-01-26 7:38 ` Serge Hallyn
2016-01-24 22:22 ` Andy Lutomirski
2016-01-25 18:51 ` Kees Cook
2016-01-25 18:53 ` Andy Lutomirski
2016-01-25 18:56 ` Kees Cook
2016-01-25 19:33 ` Eric W. Biederman
2016-01-25 22:34 ` Kees Cook
2016-01-25 23:33 ` Andy Lutomirski
2016-01-26 2:27 ` Daniel Micay
2016-01-26 4:57 ` Eric W. Biederman
2016-01-26 14:38 ` Josh Boyer
2016-01-26 14:46 ` Austin S. Hemmelgarn
2016-01-26 14:56 ` Josh Boyer
2016-01-26 17:20 ` Serge Hallyn
2016-01-26 19:56 ` Josh Boyer
2016-01-26 20:11 ` Austin S. Hemmelgarn
2016-01-26 17:15 ` Serge Hallyn
2016-01-26 18:09 ` Austin S. Hemmelgarn
2016-01-26 18:27 ` Andy Lutomirski
2016-01-26 18:45 ` Austin S. Hemmelgarn
2016-01-26 23:15 ` Kees Cook
2016-01-26 23:13 ` Kees Cook
2016-01-27 10:27 ` Eric W. Biederman
2016-01-27 12:32 ` Austin S. Hemmelgarn
2016-01-28 14:41 ` Robert Święcki
2016-01-26 23:47 ` Josh Boyer
2016-01-26 16:37 ` Kees Cook
2016-01-28 8:56 ` Serge E. Hallyn
2016-01-28 12:53 ` Austin S. Hemmelgarn
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