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Message-Id: <163594980764.8310.6832272093505307449.git-patchwork-notify@kernel.org>
Date: Wed, 03 Nov 2021 14:30:07 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Ziyang Xuan <william.xuanziyang@...wei.com>
Cc: davem@...emloft.net, kuba@...nel.org, jgg@...dia.com,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v2] net: vlan: fix a UAF in vlan_dev_real_dev()
Hello:
This patch was applied to netdev/net.git (master)
by David S. Miller <davem@...emloft.net>:
On Tue, 2 Nov 2021 10:12:18 +0800 you wrote:
> The real_dev of a vlan net_device may be freed after
> unregister_vlan_dev(). Access the real_dev continually by
> vlan_dev_real_dev() will trigger the UAF problem for the
> real_dev like following:
>
> ==================================================================
> BUG: KASAN: use-after-free in vlan_dev_real_dev+0xf9/0x120
> Call Trace:
> kasan_report.cold+0x83/0xdf
> vlan_dev_real_dev+0xf9/0x120
> is_eth_port_of_netdev_filter.part.0+0xb1/0x2c0
> is_eth_port_of_netdev_filter+0x28/0x40
> ib_enum_roce_netdev+0x1a3/0x300
> ib_enum_all_roce_netdevs+0xc7/0x140
> netdevice_event_work_handler+0x9d/0x210
> ...
>
> [...]
Here is the summary with links:
- [net,v2] net: vlan: fix a UAF in vlan_dev_real_dev()
https://git.kernel.org/netdev/net/c/563bcbae3ba2
You are awesome, thank you!
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