netdev - Re: [PATCH net-2.6] ip: NULL pointer dereferrence in tcp_v(4|6)_send

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: <200810011306.15745.vgusev@openvz.org>
Date:	Wed, 1 Oct 2008 13:06:15 +0400
From:	Vitaliy Gusev <vgusev@...nvz.org>
To:	David Miller <davem@...emloft.net>
Cc:	den@...nvz.org, xemul@...nvz.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-2.6] ip: NULL pointer dereferrence in tcp_v(4|6)_send_ack

On 1 October 2008 12:52:46 David Miller wrote:
> From: "Denis V. Lunev" <den@...nvz.org>
> Date: Tue, 30 Sep 2008 20:29:11 +0400
> 
> > The following actions are possible:
> > tcp_v4_rcv
> >   skb->dev = NULL;
> >   tcp_v4_do_rcv
> >     tcp_v4_hnd_req
> >       tcp_check_req
> >         req->rsk_ops->send_ack == tcp_v4_send_ack
> > 
> > So, skb->dev can be NULL in tcp_v4_send_ack. We must obtain namespace
> > from dst entry. IPv6 codepath is similar.
> > 
> > Thanks to Vitaliy Gusev <vgusev@...nvz.org> for initial oops decoding.
> > 
> > Signed-off-by: Denis V. Lunev <den@...nvz.org>
> 
> Vitaliy sent the same patch first, so I applied his copy :-)

Den's patch is not the same. My patch didn't fix IPv6 code.

> 
> Thanks everyone.
> --
> 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
> 



-- 
Thank,
Vitaliy Gusev
--
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