From: David Howells <dhowells@redhat.com>
To: ebiederm@xmission.com (Eric W. Biederman)
Cc: dhowells@redhat.com, Oleg Nesterov <oleg@redhat.com>,
Ian Kent <ikent@redhat.com>,
Kernel Mailing List <linux-kernel@vger.kernel.org>,
"J. Bruce Fields" <bfields@fieldses.org>,
Stanislav Kinsbursky <skinsbursky@parallels.com>,
Trond Myklebust <trond.myklebust@primarydata.com>,
Benjamin Coddington <bcodding@redhat.com>,
Al Viro <viro@ZenIV.linux.org.uk>
Subject: Re: [RFC PATCH 3/4] kmod - add call_usermodehelper_ns() helper
Date: Wed, 26 Nov 2014 11:46:22 +0000 [thread overview]
Message-ID: <1369.1417002382@warthog.procyon.org.uk> (raw)
In-Reply-To: <87y4qy7wci.fsf@x220.int.ebiederm.org>
Eric W. Biederman <ebiederm@xmission.com> wrote:
> Ian if we were to merge this I believe you would win the award for
> easiest path to a root shell.
Is there any particular reason the upcalled program has to be run as root?
Could the kernel not run it as something else - perhaps the caller's UID,GID
or even something anonymous?
Also, call_sbin_request_key() could be given a parameter to call something
other than /sbin/request-key, and key_type::request_key could be used.
David
next prev parent reply other threads:[~2014-11-26 11:46 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-25 1:07 [RFC PATCH 0/4] Namespace contrained helper execution Ian Kent
2014-11-25 1:07 ` [RFC PATCH 1/4] vfs - fs/namespaces.c: break out mntns_setfs() from mntns_install() Ian Kent
2014-11-25 1:07 ` [RFC PATCH 2/4] nsproxy - make create_new_namespaces() non-static Ian Kent
2014-11-25 1:07 ` [RFC PATCH 3/4] kmod - add call_usermodehelper_ns() helper Ian Kent
2014-11-25 21:52 ` Oleg Nesterov
2014-11-25 22:06 ` Oleg Nesterov
2014-11-25 22:23 ` Eric W. Biederman
2014-11-25 23:07 ` Ian Kent
2014-11-25 23:19 ` Eric W. Biederman
2014-11-25 23:50 ` Ian Kent
2014-11-26 0:44 ` Ian Kent
2014-11-26 1:38 ` Eric W. Biederman
2014-12-01 21:56 ` Benjamin Coddington
2014-12-02 23:33 ` Ian Kent
2014-12-03 16:49 ` Eric W. Biederman
2014-12-03 18:14 ` Benjamin Coddington
2014-12-03 22:53 ` Ian Kent
2014-12-03 23:34 ` Ian Kent
2014-11-25 23:14 ` Ian Kent
2014-11-26 11:46 ` David Howells [this message]
2014-11-26 15:00 ` Eric W. Biederman
2014-11-26 22:57 ` J. Bruce Fields
2014-11-25 22:36 ` Ian Kent
2014-11-25 23:27 ` Eric W. Biederman
2014-11-28 0:19 ` Ian Kent
2014-11-27 1:30 ` Oleg Nesterov
2014-11-25 1:07 ` [RFC PATCH 4/4] KEYS: exec request-key within the requesting task's namespace Ian Kent
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