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CVE-2022-49200 (GCVE-0-2022-49200)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-05-11 18:55
VLAI
Title
Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9aebfd4a2200ab8075e44379c758bccefdc589bb , < 874eca93966a786eace87fa6dfb206c2dd9519b1 (git)
Affected: 9aebfd4a2200ab8075e44379c758bccefdc589bb , < 70a6cf749d9ff9f463490248322e5343199bc267 (git)
Affected: 9aebfd4a2200ab8075e44379c758bccefdc589bb , < 770a97d3f34b801de1b04737b43e02c55118c41a (git)
Affected: 9aebfd4a2200ab8075e44379c758bccefdc589bb , < 4d3d1f2c35a19988d3c5f0ee86038b525e830840 (git)
Affected: 9aebfd4a2200ab8075e44379c758bccefdc589bb , < 6d7be5afbb41c918d2f12f857f8c7efa50500be2 (git)
Affected: 9aebfd4a2200ab8075e44379c758bccefdc589bb , < b062a0b9c1dc1ff63094337dccfe1568d5b62023 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.189 , ≤ 5.4.* (semver)
Unaffected: 5.10.110 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "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-\u003epower_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-\u003ereq_workqueue, \u0026hdev-\u003epower_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."
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        "dateUpdated": "2026-05-11T18:55:04.839Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49200\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:00:57.067\",\"lastModified\":\"2026-06-17T05:17:21.853\",\"vulnStatus\":\"Analyzed\",\"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-\u003epower_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-\u003ereq_workqueue, \u0026hdev-\u003epower_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-\u0026gt;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-\u0026gt;req_workqueue, \u0026amp;hdev-\u0026gt;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 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rnel.org/stable/c/b062a0b9c1dc1ff63094337dccfe1568d5b62023\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:22:23+00:00",
      "cve": "CVE-2022-49200",
      "id": "CVE-2022-49200",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49200.json",
      "version": "3"
    }
  }
}



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