From: James Morris <jmorris@namei.org>
To: Jan Engelhardt <jengelh@computergmbh.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Stephen Smalley <sds@tycho.nsa.gov>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 09/11] security: Protection for exploiting null dereference using mmap
Date: Tue, 10 Jul 2007 09:10:48 -0400 (EDT) [thread overview]
Message-ID: <Line.LNX.4.64.0707100910270.14361@d.namei> (raw)
In-Reply-To: <Pine.LNX.4.64.0707100951140.11053@fbirervta.pbzchgretzou.qr>
On Tue, 10 Jul 2007, Jan Engelhardt wrote:
>
> On Jul 8 2007 22:59, James Morris wrote:
> >@@ -420,8 +420,12 @@ static int dummy_file_ioctl (struct file *file, unsigned int command,
> >
> > static int dummy_file_mmap (struct file *file, unsigned long reqprot,
> > unsigned long prot,
> >- unsigned long flags)
> >+ unsigned long flags,
> >+ unsigned long addr,
> >+ unsigned long addr_only)
> > {
> >+ if (addr < mmap_min_addr)
> >+ return -EACCES;
> > return 0;
> > }
> >
>
> Not -EPERM?
No, EACCES is what's used.
--
James Morris
<jmorris@namei.org>
next prev parent reply other threads:[~2007-07-10 13:10 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-09 2:54 [PATCH 0/11] SELinux patches for 2.6.23 James Morris
2007-07-09 2:55 ` [PATCH 01/11] selinux: add support for querying object classes and permissions from the running policy James Morris
2007-07-09 2:56 ` [PATCH 02/11] selinux: rename sel_remove_bools() for more general usage James Morris
2007-07-09 2:56 ` [PATCH 03/11] selinux: change sel_make_dir() to specify inode counter James Morris
2007-07-09 2:57 ` [PATCH 04/11] selinux: add selinuxfs structure for object class discovery James Morris
2007-07-09 2:58 ` [PATCH 05/11] security: revalidate rw permissions for sys_splice and sys_vmsplice James Morris
2007-07-12 2:04 ` James Morris
2007-07-12 6:13 ` Jens Axboe
2007-07-09 2:58 ` [PATCH 06/11] selinux: introduce schedule points in policydb_destroy() James Morris
2007-07-09 2:59 ` [PATCH 08/11] SELinux: Use %lu for inode->i_no when printing avc James Morris
2007-07-09 2:59 ` [PATCH 09/11] security: Protection for exploiting null dereference using mmap James Morris
2007-07-10 7:52 ` Jan Engelhardt
2007-07-10 13:10 ` James Morris [this message]
2007-07-09 3:00 ` [PATCH 10/11] SELinux: use SECINITSID_NETMSG instead of SECINITSID_UNLABELED for NetLabel James Morris
2007-07-09 3:01 ` [PATCH 11/11] security: unexport mmap_min_addr James Morris
2007-07-09 3:02 ` [PATCH 07/11] SELinux: allow preemption between transition permission checks James Morris
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