fkie_cve-2024-38630
Vulnerability from fkie_nvd
Published
2024-06-21 11:15
Modified
2024-11-21 09:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger
When the cpu5wdt module is removing, the origin code uses del_timer() to
de-activate the timer. If the timer handler is running, del_timer() could
not stop it and will return directly. If the port region is released by
release_region() and then the timer handler cpu5wdt_trigger() calls outb()
to write into the region that is released, the use-after-free bug will
happen.
Change del_timer() to timer_shutdown_sync() in order that the timer handler
could be finished before the port region is released.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger\n\nWhen the cpu5wdt module is removing, the origin code uses del_timer() to\nde-activate the timer. If the timer handler is running, del_timer() could\nnot stop it and will return directly. If the port region is released by\nrelease_region() and then the timer handler cpu5wdt_trigger() calls outb()\nto write into the region that is released, the use-after-free bug will\nhappen.\n\nChange del_timer() to timer_shutdown_sync() in order that the timer handler\ncould be finished before the port region is released."
},
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"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: watchdog: cpu5wdt.c: corrige el error de use-after-free causado por cpu5wdt_trigger Cuando se elimina el m\u00f3dulo cpu5wdt, el c\u00f3digo de origen usa del_timer() para desactivar el temporizador. Si el controlador del temporizador se est\u00e1 ejecutando, del_timer() no pudo detenerlo y regresar\u00e1 directamente. Si la regi\u00f3n del puerto es liberada por release_region() y luego el controlador del temporizador cpu5wdt_trigger() llama a outb() para escribir en la regi\u00f3n que se libera, se producir\u00e1 el error de use-after-free. Cambie del_timer() a timer_shutdown_sync() para que el controlador del temporizador pueda finalizar antes de que se libere la regi\u00f3n del puerto."
}
],
"id": "CVE-2024-38630",
"lastModified": "2024-11-21T09:26:31.907",
"metrics": {
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"attackVector": "LOCAL",
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"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"impactScore": 5.9,
"source": "nvd@nist.gov",
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"published": "2024-06-21T11:15:11.810",
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"vulnStatus": "Modified",
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"type": "Primary"
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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