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From: patchwork-bot+netdevbpf@kernel.org
To: Weiming Shi <bestswngs@gmail.com>
Cc: jmaloy@redhat.com, davem@davemloft.net, edumazet@google.com,
	kuba@kernel.org, pabeni@redhat.com, horms@kernel.org,
	ying.xue@windriver.com, netdev@vger.kernel.org,
	tipc-discussion@lists.sourceforge.net,
	linux-kernel@vger.kernel.org, xmei5@asu.edu
Subject: Re: [PATCH net v3] tipc: fix use-after-free of the discoverer in tipc_disc_rcv()
Date: Sun, 21 Jun 2026 21:40:12 +0000	[thread overview]
Message-ID: <178207801247.510072.8510116277574588342.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260617135744.3383175-3-bestswngs@gmail.com>

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Wed, 17 Jun 2026 21:57:45 +0800 you wrote:
> bearer_disable() frees b->disc with tipc_disc_delete()'s plain kfree(),
> but tipc_disc_rcv() still dereferences b->disc in RX softirq under
> rcu_read_lock() (tipc_udp_recv -> tipc_rcv -> tipc_disc_rcv).
> 
> L2 bearers are safe thanks to the synchronize_net() in
> tipc_disable_l2_media(), but the UDP bearer defers that call to the
> cleanup_bearer() workqueue, so the discoverer is freed with no grace
> period:
> 
> [...]

Here is the summary with links:
  - [net,v3] tipc: fix use-after-free of the discoverer in tipc_disc_rcv()
    https://git.kernel.org/netdev/net/c/1579342d7113

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



      parent reply	other threads:[~2026-06-21 21:40 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-17 13:57 [PATCH net v3] tipc: fix use-after-free of the discoverer in tipc_disc_rcv() Weiming Shi
2026-06-18  8:45 ` Tung Quang Nguyen
2026-06-21 21:40 ` patchwork-bot+netdevbpf [this message]

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