From: Rik van Riel <riel@redhat.com>
To: Kees Cook <keescook@chromium.org>, kernel-hardening@lists.openwall.com
Cc: David Windsor <dave@nullcore.net>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [kernel-hardening] [PATCH 00/23] Hardened usercopy whitelisting
Date: Tue, 20 Jun 2017 15:41:13 -0400 [thread overview]
Message-ID: <1497987673.20270.107.camel@redhat.com> (raw)
In-Reply-To: <1497915397-93805-1-git-send-email-keescook@chromium.org>
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On Mon, 2017-06-19 at 16:36 -0700, Kees Cook wrote:
> This series is modified from Brad Spengler/PaX Team's PAX_USERCOPY
> code
> in the last public patch of grsecurity/PaX based on our understanding
> of the code. Changes or omissions from the original code are ours and
> don't reflect the original grsecurity/PaX code.
>
> David Windsor did the bulk of the porting, refactoring, splitting,
> testing, etc; I just did some extra tweaks, hunk moving, and small
> extra patches.
>
>
> This updates the slab allocator to add annotations (useroffset and
> usersize) to define allowed usercopy regions.
This is a great improvement over the old system
of having a few whitelisted kmalloc caches, and
bounce buffering to copy data from caches that
are not whitelisted!
I like it.
--
All rights reversed
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next prev parent reply other threads:[~2017-06-20 19:41 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-19 23:36 [PATCH 00/23] Hardened usercopy whitelisting Kees Cook
2017-06-19 23:36 ` [PATCH 01/23] usercopy: Prepare for " Kees Cook
2017-06-19 23:36 ` [PATCH 02/23] usercopy: Enforce slab cache usercopy region boundaries Kees Cook
2017-06-19 23:36 ` [PATCH 03/23] vfs: define usercopy region in names_cache slab caches Kees Cook
2017-06-19 23:36 ` [PATCH 04/23] vfs: copy struct mount.mnt_id to userspace using put_user() Kees Cook
2017-06-19 23:36 ` [PATCH 05/23] befs: define usercopy region in befs_inode_cache slab cache Kees Cook
2017-06-19 23:36 ` [PATCH 06/23] cifs: define usercopy region in cifs_request " Kees Cook
2017-06-19 23:36 ` [PATCH 07/23] exofs: define usercopy region in exofs_inode_cache " Kees Cook
2017-06-19 23:36 ` [PATCH 08/23] ext2: define usercopy region in ext2_inode_cache " Kees Cook
2017-06-19 23:36 ` [PATCH 09/23] ext4: define usercopy region in ext4_inode_cache " Kees Cook
2017-06-19 23:36 ` [PATCH 10/23] vxfs: define usercopy region in vxfs_inode " Kees Cook
2017-06-19 23:36 ` [PATCH 11/23] jfs: define usercopy region in jfs_ip " Kees Cook
2017-06-19 23:36 ` [PATCH 12/23] orangefs: define usercopy region in orangefs_inode_cache " Kees Cook
2017-06-19 23:36 ` [PATCH 13/23] ufs: define usercopy region in ufs_inode_cache " Kees Cook
2017-06-19 23:36 ` [PATCH 14/23] fork: define usercopy region in thread_stack, task_struct, mm_struct slab caches Kees Cook
2017-06-19 23:36 ` [PATCH 15/23] net: define usercopy region in struct proto slab cache Kees Cook
2017-06-19 23:36 ` [PATCH 16/23] net: copy struct sctp_sock.autoclose to userspace using put_user() Kees Cook
2017-06-19 23:36 ` [PATCH 17/23] dcache: define usercopy region in dentry_cache slab cache Kees Cook
2017-06-20 4:08 ` [kernel-hardening] " Eric Biggers
2017-06-28 16:44 ` Kees Cook
2017-06-28 16:55 ` Eric Biggers
2017-06-19 23:36 ` [PATCH 18/23] scsi: define usercopy region in scsi_sense_cache " Kees Cook
2017-06-19 23:36 ` [PATCH 19/23] xfs: define usercopy region in xfs_inode " Kees Cook
2017-06-19 23:36 ` [PATCH 20/23] usercopy: convert kmalloc caches to usercopy caches Kees Cook
2017-06-19 23:36 ` [PATCH 21/23] usercopy: Restrict non-usercopy caches to size 0 Kees Cook
2017-06-20 4:04 ` [kernel-hardening] " Eric Biggers
2017-06-28 17:03 ` Kees Cook
2017-06-19 23:36 ` [PATCH 22/23] usercopy: split user-controlled slabs to separate caches Kees Cook
2017-06-20 4:24 ` [kernel-hardening] " Eric Biggers
2017-06-20 4:47 ` Eric Biggers
2017-06-20 22:27 ` Kees Cook
2017-06-20 20:24 ` Laura Abbott
2017-06-20 22:22 ` Kees Cook
2017-06-27 7:31 ` Michal Hocko
2017-06-27 22:07 ` Kees Cook
2017-06-28 8:54 ` Michal Hocko
2017-06-19 23:36 ` [PATCH 23/23] mm: Allow slab_nomerge to be set at build time Kees Cook
2017-06-20 4:09 ` [kernel-hardening] " Daniel Micay
2017-06-20 22:51 ` Kees Cook
2017-06-20 4:29 ` Eric Biggers
2017-06-20 23:09 ` Kees Cook
2017-06-20 19:41 ` Rik van Riel [this message]
2017-10-20 22:40 ` [PATCH 00/23] Hardened usercopy whitelisting Paolo Bonzini
2017-10-20 23:25 ` Paolo Bonzini
2017-10-21 3:04 ` Kees Cook
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