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From: patchwork-bot+netdevbpf@kernel.org
To: Eric Dumazet <edumazet@google.com>
Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
	horms@kernel.org, netdev@vger.kernel.org, eric.dumazet@gmail.com,
	syzbot+64ec81389cbad56a8c35@syzkaller.appspotmail.com,
	jmaloy@redhat.com
Subject: Re: [PATCH net] tipc: fix UAF in tipc_l2_send_msg()
Date: Mon, 15 Jun 2026 20:00:07 +0000	[thread overview]
Message-ID: <178155360788.272818.6185540664390740665.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260612135949.4010482-1-edumazet@google.com>

Hello:

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

On Fri, 12 Jun 2026 13:59:49 +0000 you wrote:
> Syzbot reported a slab-use-after-free in ipvlan_hard_header() when
> called from tipc_l2_send_msg().
> 
> The root cause is that tipc_disable_l2_media() calls synchronize_net()
> while b->media_ptr is still valid. This allows concurrent RCU readers
> to obtain the device pointer after synchronize_net() has finished.
> The pointer is cleared later in bearer_disable(), but without any
> subsequent synchronization, allowing the device to be freed while
> still in use by readers.
> 
> [...]

Here is the summary with links:
  - [net] tipc: fix UAF in tipc_l2_send_msg()
    https://git.kernel.org/netdev/net/c/f4c3d89fc986

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



      parent reply	other threads:[~2026-06-15 20:00 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-12 13:59 [PATCH net] tipc: fix UAF in tipc_l2_send_msg() Eric Dumazet
2026-06-13  2:50 ` Tung Quang Nguyen
2026-06-13  3:31   ` Eric Dumazet
2026-06-15  4:46 ` Tung Quang Nguyen
2026-06-15 20:00 ` patchwork-bot+netdevbpf [this message]

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