From: Zhengping Jiang <jiangzp@google.com>
To: linux-bluetooth@vger.kernel.org, marcel@holtmann.org,
luiz.dentz@gmail.com
Cc: chromeos-bluetooth-upstreaming@chromium.org, mmandlik@google.com,
Zhengping Jiang <jiangzp@google.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Johan Hedberg <johan.hedberg@gmail.com>,
Paolo Abeni <pabeni@redhat.com>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: [kernel PATCH v1 0/1] Clear workqueue to avoid use-after-free
Date: Tue, 21 Feb 2023 16:09:13 -0800 [thread overview]
Message-ID: <20230222000915.2843208-1-jiangzp@google.com> (raw)
After the hci_sync rework, cmd_sync_work was cleared when calling
hci_unregister_dev, but not when powering off the adapter.
Use-after-free errors happened because a work is still scheduled
when cmd is freed by __mgmt_power_off.
Changes in v1:
- Clear cmd_sync_work queue before clearing the mgmt cmd list
Zhengping Jiang (1):
Bluetooth: hci_sync: clear workqueue before clear mgmt cmd
net/bluetooth/hci_sync.c | 2 ++
1 file changed, 2 insertions(+)
--
2.39.2.637.g21b0678d19-goog
next reply other threads:[~2023-02-22 0:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-22 0:09 Zhengping Jiang [this message]
2023-02-22 0:09 ` [kernel PATCH v1 1/1] Bluetooth: hci_sync: clear workqueue before clear mgmt cmd Zhengping Jiang
2023-02-22 18:44 ` Zhengping Jiang
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