netdev - Re: [PATCH] ipv4: gre: Fix null pointer dereference in gre_cisco

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:	Mon, 24 Mar 2014 15:14:17 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	asuka.com@....com
Cc:	xeb@...l.ru, kuznet@....inr.ac.ru, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org, kaber@...sh.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipv4: gre: Fix null pointer dereference in
 gre_cisco_err()

From: Wei Zhang <asuka.com@....com>
Date: Mon, 24 Mar 2014 15:34:31 +0800

> When use the gre vport, openvswitch register a gre_cisco_protocol but
> does not supply a err_handler with it. The gre_cisco_err() call the
> err_handler without existence check, cause the kernel crash.
> 
> This patch base on v3.14-rc7. But the bug affect all kernel newer than
> 3.11!
> 
> Signed-off-by: Wei Zhang <asuka.com@....com>

Rather, openvswitch should provide an appropriate ->err_handler() that
returns PACKET_RCVD or PACKET_REJECT.

I'm not applying this 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