linux-kernel - Re: [PATCH] fs: block cross-uid sticky symlinks

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Message-ID: <20100528183952.GK6056@outflux.net>
Date:	Fri, 28 May 2010 11:39:52 -0700
From:	Kees Cook <kees.cook@...onical.com>
To:	Dave Young <hidave.darkstar@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, linux-doc@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Kosina <jkosina@...e.cz>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	James Morris <jmorris@...ei.org>,
	Eric Paris <eparis@...hat.com>,
	Serge Hallyn <serue@...ibm.com>,
	David Howells <dhowells@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Tim Gardner <tim.gardner@...onical.com>
Subject: Re: [PATCH] fs: block cross-uid sticky symlinks

Hi,

On Fri, May 28, 2010 at 02:10:37PM +0800, Dave Young wrote:
> > --- a/kernel/sysctl.c
> > +++ b/kernel/sysctl.c
> > @@ -88,6 +88,7 @@ extern int sysctl_oom_dump_tasks;
> >  extern int max_threads;
> >  extern int core_uses_pid;
> >  extern int suid_dumpable;
> > +extern int weak_sticky_symlinks;
> 
> It will be better to put in security.h

Noted; I will move it there.

Thanks,

-Kees

-- 
Kees Cook
Ubuntu Security Team
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