netdev - Re: icmp_route_lookup returns wrong source address information

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]

Date:	Fri, 22 Jul 2011 16:15:31 +0200
From:	Florian Westphal <fw@...len.de>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: icmp_route_lookup returns wrong source address information

David Miller <davem@...emloft.net> wrote:
> From: Florian Westphal <fw@...len.de>
> Date: Wed, 20 Jul 2011 21:22:58 +0200
> 
> > Problem is that xfrm_decode_session_reverse() may rebuild fl4 from scratch.
> > 
> > In my setup, "goto relookup_failed" will be hit a bit later on, and fl4->saddr will
> > be set to iph->daddr...
> 
> Indeed, we can't use this new fl4 until we commit to using 'rt2'.
> 
> Please give this patch a try:
> 
> --------------------
> icmp: Fix regression in nexthop resolution during replies.
> 
> icmp_route_lookup() uses the wrong flow parameters if the reverse
> session route lookup isn't used.
> 
> So do not commit to the re-decoded flow until we actually make a
> final decision to use a real route saved in 'rt2'.

Thanks, traceroute shows the expected 1st hop again
with your patch applied.
--
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