linux-kernel - Re: [patch 7/8] allow unprivileged mounts

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <p73d51x4c1w.fsf@bingen.suse.de>
Date:	22 Apr 2007 00:06:51 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Miklos Szeredi <miklos@...redi.hu>, 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 7/8] allow unprivileged mounts

Andrew Morton <akpm@...ux-foundation.org> writes:

> On Fri, 20 Apr 2007 12:25:39 +0200 Miklos Szeredi <miklos@...redi.hu> wrote:
> 
> > Define a new fs flag FS_SAFE, which denotes, that unprivileged
> > mounting of this filesystem may not constitute a security problem.
> > 
> > Since most filesystems haven't been designed with unprivileged
> > mounting in mind, a thorough audit is needed before setting this flag.
> 
> Practically speaking, is there any realistic likelihood that any filesystem
> apart from FUSE will ever use this?

If it worked for mount --bind for any fs I could see uses of this.  I haven't thought
through the security implications though, so it might not work.

-Andi
-
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/