CVE-2022-49200 (GCVE-0-2022-49200)
Vulnerability from cvelistv5
Published
2025-02-26 01:55
Modified
2025-05-04 08:32
Severity ?
VLAI Severity ?
EPSS score ?
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.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 9aebfd4a2200ab8075e44379c758bccefdc589bb Version: 9aebfd4a2200ab8075e44379c758bccefdc589bb Version: 9aebfd4a2200ab8075e44379c758bccefdc589bb Version: 9aebfd4a2200ab8075e44379c758bccefdc589bb Version: 9aebfd4a2200ab8075e44379c758bccefdc589bb Version: 9aebfd4a2200ab8075e44379c758bccefdc589bb |
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|
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{
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"programFiles": [
"drivers/bluetooth/btmtksdio.c"
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{
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{
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"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"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."
}
],
"providerMetadata": {
"dateUpdated": "2025-05-04T08:32:13.272Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/874eca93966a786eace87fa6dfb206c2dd9519b1"
},
{
"url": "https://git.kernel.org/stable/c/70a6cf749d9ff9f463490248322e5343199bc267"
},
{
"url": "https://git.kernel.org/stable/c/770a97d3f34b801de1b04737b43e02c55118c41a"
},
{
"url": "https://git.kernel.org/stable/c/4d3d1f2c35a19988d3c5f0ee86038b525e830840"
},
{
"url": "https://git.kernel.org/stable/c/6d7be5afbb41c918d2f12f857f8c7efa50500be2"
},
{
"url": "https://git.kernel.org/stable/c/b062a0b9c1dc1ff63094337dccfe1568d5b62023"
}
],
"title": "Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt",
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"cveId": "CVE-2022-49200",
"datePublished": "2025-02-26T01:55:42.758Z",
"dateReserved": "2025-02-26T01:49:39.291Z",
"dateUpdated": "2025-05-04T08:32:13.272Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}