linux-kernel - [PATCH 0/2] mm: Expand CONFIG_SLAB_FREELIST

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-Id: <20200617195349.3471794-1-keescook@chromium.org>
Date:   Wed, 17 Jun 2020 12:53:47 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Kees Cook <keescook@...omium.org>,
        Vlastimil Babka <vbabka@...e.cz>, Roman Gushchin <guro@...com>,
        Christoph Lameter <cl@...ux.com>,
        Alexander Popov <alex.popov@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, vinmenon@...eaurora.org,
        Matthew Garrett <mjg59@...gle.com>,
        Jann Horn <jannh@...gle.com>,
        Vijayanand Jitta <vjitta@...eaurora.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] mm: Expand CONFIG_SLAB_FREELIST_HARDENED to include SLAB and SLOB

Hi,

In reviewing Vlastimil Babka's latest slub debug series, I realized[1]
that several checks under CONFIG_SLAB_FREELIST_HARDENED weren't being
applied to SLAB (or SLOB). Fix this by expanding the Kconfig coverage and
moving the cache_from_obj() check back into the common code. Additionally
adds a simple double-free test for SLAB.

Thanks!

-Kees

[1] https://lore.kernel.org/lkml/202006171039.FBDF2D7F4A@keescook/

Kees Cook (2):
  mm: Expand CONFIG_SLAB_FREELIST_HARDENED to include SLAB and SLOB
  slab: Add naive detection of double free

 init/Kconfig |  8 ++++----
 mm/slab.c    | 22 ++++++++++++----------
 mm/slab.h    | 31 +++++++++++++++++++++++++++++++
 mm/slub.c    | 25 +------------------------
 4 files changed, 48 insertions(+), 38 deletions(-)

-- 
2.25.1