linux-kernel - Re: [PATCH] ipc: explicitly clear stack memory in user structs

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: <AANLkTin1FmyN7_-Jg9AWizfQ04+rVWhFRcpYZykBRJ0f@mail.gmail.com>
Date:	Tue, 9 Nov 2010 23:34:50 +0200
From:	Pekka Enberg <penberg@...nel.org>
To:	Kees Cook <kees.cook@...onical.com>
Cc:	linux-kernel@...r.kernel.org, Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Slaby <jslaby@...e.cz>,
	"David S. Miller" <davem@...emloft.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	Manfred Spraul <manfred@...orfullife.com>
Subject: Re: [PATCH] ipc: explicitly clear stack memory in user structs

On Tue, Nov 9, 2010 at 10:51 PM, Pekka Enberg <penberg@...nel.org> wrote:
> On 9.11.2010 22.50, Kees Cook wrote:
>>
>> Hi Pekka,
>>
>> On Tue, Nov 09, 2010 at 10:43:07PM +0200, Pekka Enberg wrote:
>>>
>>> On Tue, Oct 26, 2010 at 2:58 AM, Kees Cook<kees.cook@...onical.com>
>>>  wrote:
>>>>
>>>> CVE-2010-4072
>>>>
>>>> The old shm interface will leak a few bytes of stack contents.
>>>> Explicitly
>>>> clear structure using memset instead of C99-style initialization in case
>>>> there are ever holes in the packing.
>>>>
>>>> Cc: stable<stable@...nel.org>
>>>> Signed-off-by: Kees Cook<kees.cook@...onical.com>
>>>
>>> This looks like a genuine bug fix but I don't see this patch in
>>> mainline. Why is that?
>>
>> No one has committed it. I don't know why; I've sent it a few times now.
>
> Andrew, would you mind picking this up and route it to the appropriate
> person if necessary?
>
> Acked-by: Pekka Enberg <penberg@...nel.org>

Oh, there seems to be a partial fix in mainline:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=3af54c9bd9e6f14f896aac1bb0e8405ae0bc7a44

Hmmh?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/