linux-kernel - [PATCH net-next 0/3] net: ipvlan: fix potential UAF problem for phy

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Message-ID: <cover.1647255926.git.william.xuanziyang@huawei.com>
Date:   Mon, 14 Mar 2022 19:11:34 +0800
From:   Ziyang Xuan <william.xuanziyang@...wei.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <netdev@...r.kernel.org>
CC:     <edumazet@...gle.com>, <sakiwit@...il.com>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH net-next 0/3] net: ipvlan: fix potential UAF problem for phy_dev

Add the reference operation to phy_dev of ipvlan to avoid
the potential UAF problem under the following known scenario:

Someone module puts the NETDEV_UNREGISTER event handler to a
work, and phy_dev is accessed in the work handler. But when
the work is excuted, phy_dev has been destroyed because upper
ipvlan did not get reference to phy_dev correctly.

In addition, add net device refcount tracker to ipvlan and
fix some error comments for ipvtap module.

Ziyang Xuan (3):
  net: ipvlan: fix potential UAF problem for phy_dev
  net: ipvlan: add net device refcount tracker
  net: ipvtap: fix error comments

 drivers/net/ipvlan/ipvlan.h      |  1 +
 drivers/net/ipvlan/ipvlan_main.c | 13 +++++++++++++
 drivers/net/ipvlan/ipvtap.c      |  4 ++--
 3 files changed, 16 insertions(+), 2 deletions(-)

-- 
2.25.1