linux-kernel - Re: [PATCH 0/3] ELF executable signing and verification

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Message-ID: <20130115231530.GB18802@redhat.com>
Date:	Tue, 15 Jan 2013 18:15:30 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	richard -rw- weinberger <richard.weinberger@...il.com>
Cc:	linux-kernel@...r.kernel.org, ebiederm@...ssion.com,
	zohar@...ux.vnet.ibm.com, pjones@...hat.com, hpa@...or.com,
	dhowells@...hat.com, jwboyer@...hat.com
Subject: Re: [PATCH 0/3] ELF executable signing and verification

On Tue, Jan 15, 2013 at 11:27:12PM +0100, richard -rw- weinberger wrote:
> On Tue, Jan 15, 2013 at 10:34 PM, Vivek Goyal <vgoyal@...hat.com> wrote:
> > Upon exec(), we determine if executable is signed. If it is, then locks
> > down the pages in memory (using MAP_LOCKED) and verfies the signature.
> > If signature does not match, process is killed. Unsigned processes
> > don't get affected at all.
> 
> Also ptrace() should be disallowed on such a process created from a signed ELF.

Yes, that I have listed in TODO. We need to disable ptrace for signed
processes or make sure only signed process can trace it.

Thanks
Vivek
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