cbcvebase.
CVE-2022-49200
published 2025-02-26

CVE-2022-49200: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt Fix the following kernel oops…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.26%
18.2th percentile
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

17 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.17.3-1 (bookworm)linux 5.17.3-1 (bookworm)
linuxlinux——
linuxlinux>= 9aebfd4a2200ab8075e44379c758bccefdc589bb < 874eca93966a786eace87fa6dfb206c2dd9519b1874eca93966a786eace87fa6dfb206c2dd9519b1
linuxlinux>= 9aebfd4a2200ab8075e44379c758bccefdc589bb < 70a6cf749d9ff9f463490248322e5343199bc26770a6cf749d9ff9f463490248322e5343199bc267
linuxlinux>= 9aebfd4a2200ab8075e44379c758bccefdc589bb < 770a97d3f34b801de1b04737b43e02c55118c41a770a97d3f34b801de1b04737b43e02c55118c41a
linuxlinux>= 9aebfd4a2200ab8075e44379c758bccefdc589bb < 4d3d1f2c35a19988d3c5f0ee86038b525e8308404d3d1f2c35a19988d3c5f0ee86038b525e830840
linuxlinux>= 9aebfd4a2200ab8075e44379c758bccefdc589bb < 6d7be5afbb41c918d2f12f857f8c7efa50500be26d7be5afbb41c918d2f12f857f8c7efa50500be2
linuxlinux>= 9aebfd4a2200ab8075e44379c758bccefdc589bb < b062a0b9c1dc1ff63094337dccfe1568d5b62023b062a0b9c1dc1ff63094337dccfe1568d5b62023
linuxlinux_kernel>= 0 < 5.10.113-15.10.113-1
linuxlinux_kernel>= 0 < 5.17.3-15.17.3-1
linuxlinux_kernel>= 0 < 5.17.3-15.17.3-1
linuxlinux_kernel>= 0 < 5.17.3-15.17.3-1
linuxlinux_kernel>= 5.11 < 5.15.335.15.33
linuxlinux_kernel>= 5.16 < 5.16.195.16.19
linuxlinux_kernel>= 5.17 < 5.17.25.17.2
linuxlinux_kernel>= 5.2 < 5.4.1895.4.189
linuxlinux_kernel>= 5.5 < 5.10.1105.10.110

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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