netdev - Re: Potential out-of-bounds access in ip6_finish

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

Message-ID: <20130917224851.GB8947@order.stressinduktion.org>
Date:	Wed, 18 Sep 2013 00:48:51 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Dmitry Vyukov <dvyukov@...gle.com>
Cc:	yoshfuji@...ux-ipv6.org, netdev@...r.kernel.org,
	Paul Turner <pjt@...gle.com>,
	Andrey Konovalov <andreyknvl@...gle.com>,
	Kostya Serebryany <kcc@...gle.com>,
	Tom Herbert <therbert@...gle.com>
Subject: Re: Potential out-of-bounds access in ip6_finish_output2

On Mon, Sep 16, 2013 at 10:13:10PM -0700, Dmitry Vyukov wrote:
> Hi,
> 
> I am working on AddressSanitizer -- a tool that detects use-after-free
> and out-of-bounds bugs
> (https://code.google.com/p/address-sanitizer/wiki/AddressSanitizerForKernel).
> 
> I've got a dozen of reports in ip6_finish_output2. Below are 2 of
> them. They are always followed by kernel crash. Unfortunately I don't
> have a reproducer because I am using trinity fuzzer. I would
> appreciate if somebody familiar with the code look at sources and
> maybe spot the bug.

Thanks for the report!

I tried reproducing the bug and hit some other bugs nearby. I'll try to fix
them, but this could take some time.

Greetings,

  Hannes

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html