From: Pablo Neira Ayuso <pablo@netfilter.org>
To: "Miguel Alejandro González" <maggonzz@gmail.com>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: kernel panic in icmp_error
Date: Thu, 4 Oct 2012 10:55:57 +0200 [thread overview]
Message-ID: <20121004085557.GA27566@1984> (raw)
In-Reply-To: <CA+Z0r8NcZwtwk+GG-fKpwRMnLphpXSqpa0h1A=jJ_At7Remb_g@mail.gmail.com>
On Wed, Oct 03, 2012 at 05:22:53PM -0500, Miguel Alejandro González wrote:
> Hello
>
> I'm making a Netfilter module that depends on conntrack, it has come
> to my attention that a kernel panic occurs when a ICMP error packet
> embedded inside another ICMP error packet in the function icmp_error()
> in /ipv4/netfilter/nf_conntrack_proto_icmp.c
Can it be due to malformed packet? Do you have this patch in your kernel?
commit 07153c6ec074257ade76a461429b567cff2b3a1e
Author: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Date: Tue Apr 3 22:02:01 2012 +0200
netfilter: nf_ct_ipv4: packets with wrong ihl are invalid
> Is the function not prepared to receive this kind of packets or is
> this a bug? Will a kernel panic also happen in icmpv6_error() in
> ipv6/netfilter/nf_conntrack_proto_icmpv6.c??
I need more information, please post the kernel backtrace.
--
To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
prev parent reply other threads:[~2012-10-04 8:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-03 22:22 kernel panic in icmp_error Miguel Alejandro González
2012-10-04 8:55 ` Pablo Neira Ayuso [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20121004085557.GA27566@1984 \
--to=pablo@netfilter.org \
--cc=maggonzz@gmail.com \
--cc=netfilter-devel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).