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Message-Id: <166603861674.10129.97922978333278137.git-patchwork-notify@kernel.org> Date: Mon, 17 Oct 2022 20:30:16 +0000 From: patchwork-bot+bluetooth@...nel.org To: Zhengchao Shao <shaozhengchao@...wei.com> Cc: linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, marcel@...tmann.org, johan.hedberg@...il.com, luiz.dentz@...il.com, weiyongjun1@...wei.com, yuehaibing@...wei.com Subject: Re: [PATCH] Bluetooth: L2CAP: fix use-after-free in l2cap_conn_del() Hello: This patch was applied to bluetooth/bluetooth-next.git (master) by Luiz Augusto von Dentz <luiz.von.dentz@...el.com>: On Mon, 17 Oct 2022 15:58:13 +0800 you wrote: > When l2cap_recv_frame() is invoked to receive data, and the cid is > L2CAP_CID_A2MP, if the channel does not exist, it will create a channel. > However, after a channel is created, the hold operation of the channel > is not performed. In this case, the value of channel reference counting > is 1. As a result, after hci_error_reset() is triggered, l2cap_conn_del() > invokes the close hook function of A2MP to release the channel. Then > l2cap_chan_unlock(chan) will trigger UAF issue. > > [...] Here is the summary with links: - Bluetooth: L2CAP: fix use-after-free in l2cap_conn_del() https://git.kernel.org/bluetooth/bluetooth-next/c/42cf46dea905 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
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