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

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Message-Id: <20190509.093248.252316658138048007.davem@davemloft.net>
Date:   Thu, 09 May 2019 09:32:48 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     liuhangbin@...il.com
Cc:     netdev@...r.kernel.org, richardcochran@...il.com,
        mlichvar@...hat.com, jbenc@...hat.com, mkubecek@...e.cz,
        stefan.sorensen@...ctralink.com
Subject: Re: [PATCH net] vlan: disable SIOCSHWTSTAMP in container

From: Hangbin Liu <liuhangbin@...il.com>
Date: Thu,  9 May 2019 14:55:07 +0800

> 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>

Applied and queued up for -stable.