netdev - Re: Netfilter: kernel panic with REDIRECT target. (2.6.23 and 2.6.23.8)

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:	Tue, 20 Nov 2007 04:27:54 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	kaber@...sh.net
Cc:	johnpol@....mipt.ru, david@...olicited.net, ismail@...dus.org.tr,
	netdev@...r.kernel.org
Subject: Re: Netfilter: kernel panic with REDIRECT target. (2.6.23 and
 2.6.23.8)

From: Patrick McHardy <kaber@...sh.net>
Date: Tue, 20 Nov 2007 13:24:17 +0100

> I now understand whats happening:
> 
> - new connection is allocated without helper
> - connection is REDIRECTed to localhost
> - nf_nat_setup_info adds NAT extension, but doesn't initialize it yet
> - nf_conntrack_alter_reply performs a helper lookup based on the
>    new tuple, finds the SIP helper and allocates a helper extension,
>    causing reallocation because of too little space
> - nf_nat_move_storage is called with the uninitialized nat extension
> 
> So your fix is entirely correct, thanks a lot :)

Great, I've applied Evgeniy's patch.
-
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