netdev - Re: Netlink mmap tx security?

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Date:	Sat, 11 Oct 2014 19:09:57 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	luto@...capital.net
Cc:	torvalds@...ux-foundation.org, kaber@...sh.net,
	netdev@...r.kernel.org
Subject: Re: Netlink mmap tx security?

From: Andy Lutomirski <luto@...capital.net>
Date: Sat, 11 Oct 2014 15:29:17 -0700

> On May 12, 2014 3:08 PM, "Andy Lutomirski" <luto@...capital.net> wrote:
>>
>> [moving to netdev -- this is much lower impact than I thought, since
>> you can't set up a netlink mmap ring without global CAP_NET_ADMIN]
> 
> Did anything ever happen here?  Despite not being a privilege
> escalation in the normal sense, it's still a bug, and it's still a
> fairly easy bypass of module signatures.

We definitely still need to address this, and since Patrick has still
not responded on this issue after being given 5 months to do so, the
only reasonable path is to get rid of this feature altogether.

Thanks for reminding me.
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