netdev - Re: Nested GRE locking bug

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: <20101019.015303.104063240.davem@davemloft.net>
Date:	Tue, 19 Oct 2010 01:53:03 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	ben@...adent.org.uk, netdev@...r.kernel.org,
	beatrice.barbe@...il.com, 599816@...s.debian.org
Subject: Re: Nested GRE locking bug

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 14 Oct 2010 06:11:59 +0200

> net-next-2.6 contains a fix for this, adding the perc_cpu
> xmit_recursion limit. We might push it to net-2.6

We need to think a bit more about this.

We are essentially now saying that one can only configure
tunnels 3 levels deep, and no more.

I can guarentee you someone out there uses at least 4,
perhaps more.

And those people will be broken by the new limit.

So putting this into net-2.6 with such a low limit will
be quite dangerous.
--
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