From: ebiederm@xmission.com (Eric W. Biederman)
To: Eric Paris <eparis@parisplace.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
linux-fsdevel@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: Re: [PATCH] fuse: Only allow read/writing user xattrs
Date: Sat, 06 Oct 2012 16:42:05 -0700 [thread overview]
Message-ID: <87zk3zgoc2.fsf@xmission.com> (raw)
In-Reply-To: <CACLa4pspCPnziaobcLN_QXRZ8quVPi4gTnyA0GO=uxmDWoA_kw@mail.gmail.com> (Eric Paris's message of "Sat, 6 Oct 2012 11:57:35 -0400")
Eric Paris <eparis@parisplace.org> writes:
> Why trust uids or rwx bits. Might as well do away with those as well,
> right?
Lying to your own userspace processes (which you can do with LD_PRELOAD)
is rather different than lying to the selinux or the smack modules.
What I am saying with my patch is that fuse is remarkably non-nuanced
in how it interacts with extended attributes, and that it appears
very clear that there are bugs in the area of unprivileged mounts that
need to be addressed.
I am happy to hear about better solutions. Telling me it's not a bug
and sticking your head in the sand is quite amusing.
Eric
next prev parent reply other threads:[~2012-10-06 23:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-05 22:50 [PATCH] fuse: Only allow read/writing user xattrs Eric W. Biederman
2012-10-06 14:23 ` Eric Paris
2012-10-06 15:34 ` Eric W. Biederman
2012-10-06 15:57 ` Eric Paris
2012-10-06 23:42 ` Eric W. Biederman [this message]
2012-10-08 13:47 ` Serge Hallyn
2012-10-08 14:02 ` Eric Paris
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