linux-kernel - Re: Out of tree module using LSM

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Date:	Thu, 29 Nov 2007 11:19:57 -0700
From:	Justin Banks <justinb@...bone.com>
To:	Ray Lee <ray-lk@...rabbit.org>
Cc:	Greg KH <greg@...ah.com>, Jan Engelhardt <jengelh@...putergmbh.de>,
	Jon Masters <jonathan@...masters.org>, Valdis.Kletnieks@...edu,
	Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@....linux.org.uk>,
	Casey Schaufler <casey@...aufler-ca.com>,
	"Tvrtko A. Ursulin" <tvrtko.ursulin@...hos.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Out of tree module using LSM

Ray Lee wrote
> On Nov 29, 2007 9:45 AM, Greg KH <greg@...ah.com> wrote:
> > > Perhaps if you looked at this outside of a file-server scenario, the
> > > problem would be clearer? Anti-malware companies want to check
> > > anything written to disk on a system, either at write time or blocking
> > > the open/mmap. That means proactively protecting email programs with
> > > known vulnerabilities that have yet to be patched, web browsers
> > > writing and reading their caches, an Apache instance running WebDAV,
> > > the list goes on. And these are on desktop systems, with no attached
> > > file/network server.
> >
> > Ok, if they want to check on every open/mmap then just hook in glibc to
> > do this.  Especially as they want to run userspace code at this point in
> > time.
> 
> Doesn't help statically linked binaries, or anything else that bypases glibc.

Or NFS servers for that matter, either.

-justinb

-- 
Justin Banks
BakBone Software
justinb@...bone.com
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