Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt Fix the following kernel oops in btmtksdio_interrrupt [ 14.339134] btmtksdio_interrupt+0x28/0x54 [ 14.339139] process_sdio_pending_irqs+0x68/0x1a0 [ 14.339144] sdio_irq_work+0x40/0x70 [ 14.339154] process_one_work+0x184/0x39c [ 14.339160] worker_thread+0x228/0x3e8 [ 14.339168] kthread+0x148/0x3ac [ 14.339176] ret_from_fork+0x10/0x30 That happened because hdev->power_on is already called before sdio_set_drvdata which btmtksdio_interrupt handler relies on is not properly set up. The details are shown as the below: hci_register_dev would run queue_work(hdev->req_workqueue, &hdev->power_on) as WQ_HIGHPRI workqueue_struct to complete the power-on sequeunce and thus hci_power_on may run before sdio_set_drvdata is done in btmtksdio_probe. The hci_dev_do_open in hci_power_on would initialize the device and enable the interrupt and thus it is possible that btmtksdio_interrupt is being called right before sdio_set_drvdata is filled out. When btmtksdio_interrupt is being called and sdio_set_drvdata is not filled , the kernel oops is going to happen because btmtksdio_interrupt access an uninitialized pointer.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9aebfd4a2200ab8075e44379c758bccefdc589bb before 874eca93966a786eace87fa6dfb206c2dd9519b1; affected 9aebfd4a2200ab8075e44379c758bccefdc589bb before 70a6cf749d9ff9f463490248322e5343199bc267; affected 9aebfd4a2200ab8075e44379c758bccefdc589bb before 770a97d3f34b801de1b04737b43e02c55118c41a; affected 9aebfd4a2200ab8075e44379c758bccefdc589bb before 4d3d1f2c35a19988d3c5f0ee86038b525e830840; affected 9aebfd4a2200ab8075e44379c758bccefdc589bb before 6d7be5afbb41c918d2f12f857f8c7efa50500be2; affected 9aebfd4a2200ab8075e44379c758bccefdc589bb before b062a0b9c1dc1ff63094337dccfe1568d5b62023 |
| Linux / Linux | affected 5.2; unaffected 0 before 5.2; unaffected 5.4.189 through 5.4.*; unaffected 5.10.110 through 5.10.*; unaffected 5.15.33 through 5.15.*; unaffected 5.16.19 through 5.16.*; unaffected 5.17.2 through 5.17.*; unaffected 5.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/874eca93966a786eace87fa6dfb206c2dd9519b1
- https://git.kernel.org/stable/c/70a6cf749d9ff9f463490248322e5343199bc267
- https://git.kernel.org/stable/c/770a97d3f34b801de1b04737b43e02c55118c41a
- https://git.kernel.org/stable/c/4d3d1f2c35a19988d3c5f0ee86038b525e830840
- https://git.kernel.org/stable/c/6d7be5afbb41c918d2f12f857f8c7efa50500be2
- https://git.kernel.org/stable/c/b062a0b9c1dc1ff63094337dccfe1568d5b62023