linux-kernel - Re: [kernel-hardening] Re: [PATCH] checkpatch: Add ability to find bad uses of vsprintf %p<foo> extensions

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Message-ID: <1488330874.25838.43.camel@perches.com>
Date:   Tue, 28 Feb 2017 17:14:34 -0800
From:   Joe Perches <joe@...ches.com>
To:     Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Andy Whitcroft <apw@...onical.com>,
        "Roberts, William C" <william.c.roberts@...el.com>,
        "kernel-hardening@...ts.openwall.com" 
        <kernel-hardening@...ts.openwall.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [kernel-hardening] Re: [PATCH] checkpatch: Add ability to find
 bad uses of vsprintf %p<foo> extensions

On Tue, 2017-02-28 at 16:11 -0800, Kees Cook wrote:
> On Tue, Feb 28, 2017 at 4:06 PM, Andrew Morton
> <akpm@...ux-foundation.org> wrote:
> > On Mon, 27 Feb 2017 12:54:55 -0800 Joe Perches <joe@...ches.com> wrote:
> > 
> > > %pK was at least once misused at %pk in an out-of-tree module.
> > > This lead to some security concerns.  Add the ability to track
> > > single and multiple line statements for misuses of %p<foo>.
> > 
> > Should we also do this?
> 
> Ah yes, good idea. Maybe "...when adding/removing new conversion..." ?

Deleting conversions seems unlikely.