netdev - Re: BUG: NIU driver: strange issues with multicast "UDP: short packet"

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:	Wed, 04 Feb 2009 01:34:31 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jdb@...x.dk
Cc:	netdev@...r.kernel.org
Subject: Re: BUG: NIU driver: strange issues with multicast "UDP: short
 packet"

From: Jesper Dangaard Brouer <jdb@...x.dk>
Date: Wed, 04 Feb 2009 10:32:06 +0100

> On Wed, 2009-02-04 at 01:00 -0800, David Miller wrote:
> > At the point when IPMR is dealing with potentially forwarding
> > the frame, the UDP headers aren't yet pulled into the linear
> > area.  UDP input will do that with it's pskb_may_pull() call.
> 
> Can I get a little code hint, where IPMR is dealing with potentially
> forwarding the frame?

ip_mr_forward().

> Is there an easy way to test if the packet is corrupted?
> Can you recomment a way to test it?

If UDP header length field is > 2000, you've got a problem.
--
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