linux-kernel - Re: [patch 0/8] mount ownership and unprivileged mount syscall (v4)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070425000414.GH14086@petra.dvoda.cz>
Date:	Wed, 25 Apr 2007 02:04:14 +0200
From:	Karel Zak <kzak@...hat.com>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	akpm@...ux-foundation.org, serue@...ibm.com, viro@....linux.org.uk,
	linuxram@...ibm.com, ebiederm@...ssion.com,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	containers@...ts.osdl.org
Subject: Re: [patch 0/8]  mount ownership and unprivileged mount syscall (v4)

On Fri, Apr 20, 2007 at 12:25:32PM +0200, Miklos Szeredi wrote:
> The following extra security measures are taken for unprivileged
> mounts:
> 
>  - usermounts are limited by a sysctl tunable
>  - force "nosuid,nodev" mount options on the created mount

 The original userspace "user=" solution also implies the "noexec"
 option by default (you can override the default by "exec" option).

 It means the kernel based solution is not fully compatible ;-(

    Karel

-- 
 Karel Zak  <kzak@...hat.com>

 Red Hat Czech s.r.o.
 Purkynova 99/71, 612 45 Brno, Czech Republic
 Reg.id: CZ27690016
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/