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:	Thu, 12 Sep 2013 10:42:26 -0400
From:	Vlad Yasevich <vyasevic@...hat.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	Hong zhi guo <honkiko@...il.com>, netdev@...r.kernel.org,
	David Miller <davem@...emloft.net>, zhiguohong@...cent.com
Subject: Re: [PATCH net-next] fix NULL pointer dereference in br_handle_frame

On 09/12/2013 10:33 AM, Eric Dumazet wrote:
> On Thu, 2013-09-12 at 22:24 +0800, Hong zhi guo wrote:
>> You mean IFF_BRIDGE_PORT should be only for admin/control path, but
>> not for data path?
>
> By definition, br_handle_frame() should be called only when device is a
> bridge port.
>
> After the call to synchronize_net() included in
> netdev_rx_handler_unregister(), you have guarantee br_handle_frame()
> wont be called.
>
> Therefore, testing IFF_BRIDGE_PORT in br_handle_frame() is redundant.

Don't all tests for IFF_BRIDGE_PORT on the bridge receive path become 
redundant as well?

-vlad

>
>
>
> --
> 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
>

--
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

Powered by blists - more mailing lists