fkie_cve-2024-47747
Vulnerability from fkie_nvd
Published
2024-10-21 13:15
Modified
2024-11-08 16:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: seeq: Fix use after free vulnerability in ether3 Driver Due to Race Condition
In the ether3_probe function, a timer is initialized with a callback
function ether3_ledoff, bound to &prev(dev)->timer. Once the timer is
started, there is a risk of a race condition if the module or device
is removed, triggering the ether3_remove function to perform cleanup.
The sequence of operations that may lead to a UAF bug is as follows:
CPU0 CPU1
| ether3_ledoff
ether3_remove |
free_netdev(dev); |
put_devic |
kfree(dev); |
| ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2);
| // use dev
Fix it by ensuring that the timer is canceled before proceeding with
the cleanup in ether3_remove.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: seeq: Fix use after free vulnerability in ether3 Driver Due to Race Condition\n\nIn the ether3_probe function, a timer is initialized with a callback\nfunction ether3_ledoff, bound to \u0026prev(dev)-\u003etimer. Once the timer is\nstarted, there is a risk of a race condition if the module or device\nis removed, triggering the ether3_remove function to perform cleanup.\nThe sequence of operations that may lead to a UAF bug is as follows:\n\nCPU0 CPU1\n\n | ether3_ledoff\nether3_remove |\n free_netdev(dev); |\n put_devic |\n kfree(dev); |\n | ether3_outw(priv(dev)-\u003eregs.config2 |= CFG2_CTRLO, REG_CONFIG2);\n | // use dev\n\nFix it by ensuring that the timer is canceled before proceeding with\nthe cleanup in ether3_remove."
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: seeq: Se corrige la vulnerabilidad de use after free en el controlador ether3 debido a una condici\u00f3n de ejecuci\u00f3n En la funci\u00f3n ether3_probe, se inicializa un temporizador con una funci\u00f3n de devoluci\u00f3n de llamada ether3_ledoff, vinculada a \u0026amp;prev(dev)-\u0026gt;timer. Una vez que se inicia el temporizador, existe el riesgo de una condici\u00f3n de ejecuci\u00f3n si se elimina el m\u00f3dulo o dispositivo, lo que activa la funci\u00f3n ether3_remove para realizar la limpieza. La secuencia de operaciones que pueden provocar un error de UAF es la siguiente: CPU0 CPU1 | ether3_ledoff ether3_remove | free_netdev(dev); | put_devic | kfree(dev); | | ether3_outw(priv(dev)-\u0026gt;regs.config2 |= CFG2_CTRLO, REG_CONFIG2); | // use dev Corr\u00edjalo asegur\u00e1ndose de que el temporizador se cancele antes de continuar con la limpieza en ether3_remove."
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"id": "CVE-2024-47747",
"lastModified": "2024-11-08T16:15:27.837",
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"confidentialityImpact": "HIGH",
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"scope": "UNCHANGED",
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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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