[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-Id: <163677720965.27008.11067084190149438214.git-patchwork-notify@kernel.org>
Date: Sat, 13 Nov 2021 04:20:09 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Lin Ma <linma@....edu.cn>
Cc: netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
jirislaby@...nel.org, gregkh@...uxfoundation.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] hamradio: remove needs_free_netdev to avoid UAF
Hello:
This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@...nel.org>:
On Thu, 11 Nov 2021 22:14:02 +0800 you wrote:
> The former patch "defer 6pack kfree after unregister_netdev" reorders
> the kfree of two buffer after the unregister_netdev to prevent the race
> condition. It also adds free_netdev() function in sixpack_close(), which
> is a direct copy from the similar code in mkiss_close().
>
> However, in sixpack driver, the flag needs_free_netdev is set to true in
> sp_setup(), hence the unregister_netdev() will free the netdev
> automatically. Therefore, as the sp is netdev_priv, use-after-free
> occurs.
>
> [...]
Here is the summary with links:
- [v1] hamradio: remove needs_free_netdev to avoid UAF
https://git.kernel.org/netdev/net/c/81b1d548d00b
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
Powered by blists - more mailing lists