linux-kernel - Re: [PATCH] ax25: fix UAF bugs of net_device caused by rebinding operation

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Message-Id: <164441400990.27404.8523744997637933787.git-patchwork-notify@kernel.org>
Date:   Wed, 09 Feb 2022 13:40:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Duoming Zhou <duoming@....edu.cn>
Cc:     linux-hams@...r.kernel.org, dan.carpenter@...cle.com,
        jreuter@...na.de, ralf@...ux-mips.org, davem@...emloft.net,
        kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ax25: fix UAF bugs of net_device caused by rebinding
 operation

Hello:

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

On Wed,  9 Feb 2022 20:53:45 +0800 you wrote:
> The ax25_kill_by_device() will set s->ax25_dev = NULL and
> call ax25_disconnect() to change states of ax25_cb and
> sock, if we call ax25_bind() before ax25_kill_by_device().
> 
> However, if we call ax25_bind() again between the window of
> ax25_kill_by_device() and ax25_dev_device_down(), the values
> and states changed by ax25_kill_by_device() will be reassigned.
> 
> [...]

Here is the summary with links:
  - ax25: fix UAF bugs of net_device caused by rebinding operation
    https://git.kernel.org/netdev/net/c/feef318c855a

You are awesome, thank you!
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