linux-kernel - Re: [kernel-hardening] [RFC v1] mm: SLAB freelist randomization

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160406205429.GA13901@kroah.com>
Date:	Wed, 6 Apr 2016 13:54:29 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	kernel-hardening@...ts.openwall.com
Cc:	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>, gthelen@...gle.com,
	keescook@...omium.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, labbott@...oraproject.org,
	Thomas Garnier <thgarnie@...gle.com>
Subject: Re: [kernel-hardening] [RFC v1] mm: SLAB freelist randomization

On Wed, Apr 06, 2016 at 12:35:48PM -0700, Thomas Garnier wrote:
> Provide an optional config (CONFIG_FREELIST_RANDOM) to randomize the
> SLAB freelist. This security feature reduces the predictability of
> the kernel slab allocator against heap overflows.
> 
> Randomized lists are pre-computed using a Fisher-Yates shuffle and
> re-used on slab creation for performance.
> ---
> Based on next-20160405
> ---

No signed-off-by:?