netdev - Re: [PATCH net] vlan: disable SIOCSHWTSTAMP in container

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Message-ID: <20190509135231.ivchey4lwpk6emte@localhost>
Date:   Thu, 9 May 2019 06:52:31 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Hangbin Liu <liuhangbin@...il.com>
Cc:     netdev@...r.kernel.org, Miroslav Lichvar <mlichvar@...hat.com>,
        Jiri Benc <jbenc@...hat.com>,
        Michal Kubecek <mkubecek@...e.cz>,
        David Miller <davem@...emloft.net>,
        stefan.sorensen@...ctralink.com
Subject: Re: [PATCH net] vlan: disable SIOCSHWTSTAMP in container

On Thu, May 09, 2019 at 02:55:07PM +0800, Hangbin Liu wrote:
> With NET_ADMIN enabled in container, a normal user could be mapped to
> root and is able to change the real device's rx filter via ioctl on
> vlan, which would affect the other ptp process on host. Fix it by
> disabling SIOCSHWTSTAMP in container.
> 
> Fixes: a6111d3c93d0 ("vlan: Pass SIOC[SG]HWTSTAMP ioctls to real device")
> Signed-off-by: Hangbin Liu <liuhangbin@...il.com>

Acked-by: Richard Cochran <richardcochran@...il.com>