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Date: Fri, 10 May 2013 16:25:55 +0200
From: Petr Matousek <pmatouse@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE request: Linux kernel: tuntap refuse to
 re-attach to different tun_struct

On Fri, May 10, 2013 at 05:33:37PM +0530, P J P wrote:
> Linux kernels built with Universal TUN/TAP device driver(CONFIG_TUN)
> that includes multiqueue - ioctl(TUNSETQUEUE) - support, is
> vulnerable to a kernel crash while attaching a device to a new
> queue.
> 
> A user/program could use this flaw to crash the system resulting in DoS.
> 
> Upstream fix:
> -------------
>   -> https://git.kernel.org/linus/6e331f4c83021e4de2a2fc4981574b5d5b16c425
>   -> https://git.kernel.org/linus/7c0c3b1a8a175437991ccc898ed66ec5e4a96208

As both multiqueue support and fix for this issue were committed in 3.8
rc versions ((rc1 and rc4, respectively), please reject this request.

Thanks,
-- 
Petr Matousek / Red Hat Security Response Team

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