netdev - Re: [PATCH] iptables: document IPv6 TOS mangling bug in old Linux kernels

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, 17 Jun 2011 05:47:13 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Fernando Luis V�zquez Cao 
	<fernando@....ntt.co.jp>
CC:	Jan Engelhardt <jengelh@...ozas.de>,
	Maciej <zenczykowski@...il.com>,
	Pablo Neira Aysuo <pablo@...filter.org>,
	Netfilter Developer Mailing List 
	<netfilter-devel@...r.kernel.org>,
	Linux Networking Developer Mailing List 
	<netdev@...r.kernel.org>
Subject: Re: [PATCH] iptables: document IPv6 TOS mangling bug in old Linux
 kernels

On 17.06.2011 03:14, Fernando Luis V�zquez Cao wrote:
> In Linux kernels up to and including 2.6.38, with the exception of longterm
> releases 2.6.32.42 (or later) and 2.6.33.15 (or later), there is a bug (*) whereby
> IPv6 TOS mangling does not behave as documented and differs from the IPv4
> version. The TOS mask indicates the bits one wants to zero out, so it needs to
> be inverted before applying it to the original TOS field. However, the
> aformentioned kernels forgo the inversion which breaks --set-tos and its
> mnemonics.
> 
> (*) Fixed by upstream commit:
>     1ed2f73d90fb49bcf5704aee7e9084adb882bfc5 (netfilter: IPv6: fix DSCP mangle code)
> 

Applied, thanks.
--
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