linux-kernel - Re: [PATCH v2 net] net: fix information leakage in /proc/net/ptype

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Date:   Thu, 20 Jan 2022 10:50:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Congyu Liu <liu3101@...due.edu>
Cc:     davem@...emloft.net, kuba@...nel.org, yajun.deng@...ux.dev,
        edumazet@...gle.com, willemb@...gle.com, mkl@...gutronix.de,
        rsanger@...d.net.nz, wanghai38@...wei.com, pablo@...filter.org,
        jiapeng.chong@...ux.alibaba.com, xemul@...nvz.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 net] net: fix information leakage in /proc/net/ptype

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@...emloft.net>:

On Tue, 18 Jan 2022 14:20:13 -0500 you wrote:
> In one net namespace, after creating a packet socket without binding
> it to a device, users in other net namespaces can observe the new
> `packet_type` added by this packet socket by reading `/proc/net/ptype`
> file. This is minor information leakage as packet socket is
> namespace aware.
> 
> Add a net pointer in `packet_type` to keep the net namespace of
> of corresponding packet socket. In `ptype_seq_show`, this net pointer
> must be checked when it is not NULL.
> 
> [...]

Here is the summary with links:
  - [v2,net] net: fix information leakage in /proc/net/ptype
    https://git.kernel.org/netdev/net/c/47934e06b656

You are awesome, thank you!
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