netdev - Re: net/ipv6: null-ptr-deref in ip6_route_del/lock

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: <CAAeHK+wa_OLcqxrHfsz7gMe1JcQFBE9yO04Uo=B8bvjsqrT3OQ@mail.gmail.com>
Date:   Mon, 27 Feb 2017 21:37:53 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     David Ahern <dsa@...ulusnetworks.com>,
        "David S. Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        James Morris <jmorris@...ei.org>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Patrick McHardy <kaber@...sh.net>,
        netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Kostya Serebryany <kcc@...gle.com>,
        syzkaller <syzkaller@...glegroups.com>,
        Eric Dumazet <edumazet@...gle.com>
Subject: Re: net/ipv6: null-ptr-deref in ip6_route_del/lock_acquire

On Mon, Feb 27, 2017 at 9:34 PM, Cong Wang <xiyou.wangcong@...il.com> wrote:
> On Mon, Feb 27, 2017 at 12:05 PM, Andrey Konovalov
> <andreyknvl@...gle.com> wrote:
>> On Mon, Feb 27, 2017 at 8:59 PM, David Ahern <dsa@...ulusnetworks.com> wrote:
>>> On 2/27/17 10:11 AM, Cong Wang wrote:
>>>> The attached patch fixes this crash, but I am not sure if it is the
>>>> best way to fix this bug yet...
>>>
>>> I'll take a look. I can not reproduce this using route or ip, so the
>>> fuzzer is doing something interesting.
>>
>> Hi David,
>>
>> I've attached a simple reproducer to the report, it doesn't work for you?
>
> It works for me and I have verified the formal patch I sent.

Hi Cong,

That's what I thought when I read your message, thanks!

I was just confused by David saying that the fuzzer is doing something
interesting, when the reproducer is just an ioctl call on a socket.

>
> --
> You received this message because you are subscribed to the Google Groups "syzkaller" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller+unsubscribe@...glegroups.com.
> For more options, visit https://groups.google.com/d/optout.