fkie_cve-2024-35887
Vulnerability from fkie_nvd
Published
2024-05-19 09:15
Modified
2024-12-31 18:48
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ax25: fix use-after-free bugs caused by ax25_ds_del_timer
When the ax25 device is detaching, the ax25_dev_device_down()
calls ax25_ds_del_timer() to cleanup the slave_timer. When
the timer handler is running, the ax25_ds_del_timer() that
calls del_timer() in it will return directly. As a result,
the use-after-free bugs could happen, one of the scenarios
is shown below:
(Thread 1) | (Thread 2)
| ax25_ds_timeout()
ax25_dev_device_down() |
ax25_ds_del_timer() |
del_timer() |
ax25_dev_put() //FREE |
| ax25_dev-> //USE
In order to mitigate bugs, when the device is detaching, use
timer_shutdown_sync() to stop the timer.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.9 | |
| linux | linux_kernel | 6.9 |
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nax25: fix use-after-free bugs caused by ax25_ds_del_timer\n\nWhen the ax25 device is detaching, the ax25_dev_device_down()\ncalls ax25_ds_del_timer() to cleanup the slave_timer. When\nthe timer handler is running, the ax25_ds_del_timer() that\ncalls del_timer() in it will return directly. As a result,\nthe use-after-free bugs could happen, one of the scenarios\nis shown below:\n\n (Thread 1) | (Thread 2)\n | ax25_ds_timeout()\nax25_dev_device_down() |\n ax25_ds_del_timer() |\n del_timer() |\n ax25_dev_put() //FREE |\n | ax25_dev-\u003e //USE\n\nIn order to mitigate bugs, when the device is detaching, use\ntimer_shutdown_sync() to stop the timer."
},
{
"lang": "es",
"value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ax25: corrige errores de use after free causados por ax25_ds_del_timer Cuando el dispositivo ax25 se est\u00e1 desconectando, ax25_dev_device_down() llama a ax25_ds_del_timer() para limpiar el Slave_timer. Cuando el controlador del temporizador se est\u00e1 ejecutando, el ax25_ds_del_timer() que llama a del_timer() regresar\u00e1 directamente. Como resultado, podr\u00edan ocurrir errores de uso despu\u00e9s de la liberaci\u00f3n, uno de los escenarios se muestra a continuaci\u00f3n: (Subproceso 1) | (Hilo 2) | ax25_ds_timeout() ax25_dev_device_down() | ax25_ds_del_timer() | del_timer() | ax25_dev_put() //GRATIS | | ax25_dev-\u0026gt; //USE Para mitigar errores, cuando el dispositivo se est\u00e9 desconectando, use timer_shutdown_sync() para detener el temporizador."
}
],
"id": "CVE-2024-35887",
"lastModified": "2024-12-31T18:48:10.650",
"metrics": {
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"attackVector": "LOCAL",
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"baseScore": 7.8,
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"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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"published": "2024-05-19T09:15:09.837",
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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