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{
"id": "CVE-2022-49200",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-02-26T07:00:57.067",
"lastModified": "2025-02-26T07:00:57.067",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt\n\nFix the following kernel oops in btmtksdio_interrrupt\n\n[ 14.339134] btmtksdio_interrupt+0x28/0x54\n[ 14.339139] process_sdio_pending_irqs+0x68/0x1a0\n[ 14.339144] sdio_irq_work+0x40/0x70\n[ 14.339154] process_one_work+0x184/0x39c\n[ 14.339160] worker_thread+0x228/0x3e8\n[ 14.339168] kthread+0x148/0x3ac\n[ 14.339176] ret_from_fork+0x10/0x30\n\nThat happened because hdev->power_on is already called before\nsdio_set_drvdata which btmtksdio_interrupt handler relies on is not\nproperly set up.\n\nThe details are shown as the below: hci_register_dev would run\nqueue_work(hdev->req_workqueue, &hdev->power_on) as WQ_HIGHPRI\nworkqueue_struct to complete the power-on sequeunce and thus hci_power_on\nmay run before sdio_set_drvdata is done in btmtksdio_probe.\n\nThe hci_dev_do_open in hci_power_on would initialize the device and enable\nthe interrupt and thus it is possible that btmtksdio_interrupt is being\ncalled right before sdio_set_drvdata is filled out.\n\nWhen btmtksdio_interrupt is being called and sdio_set_drvdata is not filled\n, the kernel oops is going to happen because btmtksdio_interrupt access an\nuninitialized pointer."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: btmtksdio: Corrige los errores del kernel en btmtksdio_interrupt Corrige los siguientes errores del kernel en 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 Esto sucedi\u00f3 porque hdev->power_on ya se llama antes de que sdio_set_drvdata en el que se basa el controlador btmtksdio_interrupt no est\u00e9 configurado correctamente. Los detalles se muestran a continuaci\u00f3n: hci_register_dev ejecutar\u00eda queue_work(hdev->req_workqueue, &hdev->power_on) como WQ_HIGHPRI workqueue_struct para completar la secuencia de encendido y, por lo tanto, hci_power_on puede ejecutarse antes de que sdio_set_drvdata se complete en btmtksdio_probe. hci_dev_do_open en hci_power_on inicializar\u00eda el dispositivo y habilitar\u00eda la interrupci\u00f3n y, por lo tanto, es posible que btmtksdio_interrupt se llame justo antes de que se complete sdio_set_drvdata. Cuando se llama a btmtksdio_interrupt y no se completa sdio_set_drvdata, se producir\u00e1 un error en el kernel porque btmtksdio_interrupt accede a un puntero no inicializado."
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/4d3d1f2c35a19988d3c5f0ee86038b525e830840",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6d7be5afbb41c918d2f12f857f8c7efa50500be2",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/70a6cf749d9ff9f463490248322e5343199bc267",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/770a97d3f34b801de1b04737b43e02c55118c41a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/874eca93966a786eace87fa6dfb206c2dd9519b1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b062a0b9c1dc1ff63094337dccfe1568d5b62023",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}