fkie_cve-2024-35879
Vulnerability from fkie_nvd
Published
2024-05-19 09:15
Modified
2024-11-21 09:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
of: dynamic: Synchronize of_changeset_destroy() with the devlink removals
In the following sequence:
1) of_platform_depopulate()
2) of_overlay_remove()
During the step 1, devices are destroyed and devlinks are removed.
During the step 2, OF nodes are destroyed but
__of_changeset_entry_destroy() can raise warnings related to missing
of_node_put():
ERROR: memory leak, expected refcount 1 instead of 2 ...
Indeed, during the devlink removals performed at step 1, the removal
itself releasing the device (and the attached of_node) is done by a job
queued in a workqueue and so, it is done asynchronously with respect to
function calls.
When the warning is present, of_node_put() will be called but wrongly
too late from the workqueue job.
In order to be sure that any ongoing devlink removals are done before
the of_node destruction, synchronize the of_changeset_destroy() with the
devlink removals.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: dynamic: Synchronize of_changeset_destroy() with the devlink removals\n\nIn the following sequence:\n 1) of_platform_depopulate()\n 2) of_overlay_remove()\n\nDuring the step 1, devices are destroyed and devlinks are removed.\nDuring the step 2, OF nodes are destroyed but\n__of_changeset_entry_destroy() can raise warnings related to missing\nof_node_put():\n ERROR: memory leak, expected refcount 1 instead of 2 ...\n\nIndeed, during the devlink removals performed at step 1, the removal\nitself releasing the device (and the attached of_node) is done by a job\nqueued in a workqueue and so, it is done asynchronously with respect to\nfunction calls.\nWhen the warning is present, of_node_put() will be called but wrongly\ntoo late from the workqueue job.\n\nIn order to be sure that any ongoing devlink removals are done before\nthe of_node destruction, synchronize the of_changeset_destroy() with the\ndevlink removals."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: of:dynamic: Sincronizar of_changeset_destroy() con las eliminaciones de devlink En la siguiente secuencia: 1) of_platform_depopulate() 2) of_overlay_remove() Durante el paso 1, los dispositivos se destruyen y los devlinks son remoto. Durante el paso 2, los nodos OF se destruyen, pero __of_changeset_entry_destroy() puede generar advertencias relacionadas con la falta de of_node_put(): ERROR: p\u00e9rdida de memoria, recuento esperado 1 en lugar de 2... De hecho, durante las eliminaciones de devlink realizadas en el paso 1, la eliminaci\u00f3n La liberaci\u00f3n del dispositivo (y el of_node adjunto) se realiza mediante un trabajo en cola en una cola de trabajo y, por lo tanto, se realiza de forma asincr\u00f3nica con respecto a las llamadas a funciones. Cuando la advertencia est\u00e1 presente, se llamar\u00e1 a of_node_put() pero err\u00f3neamente demasiado tarde desde el trabajo de la cola de trabajo. Para asegurarse de que cualquier eliminaci\u00f3n de devlink en curso se realice antes de la destrucci\u00f3n de of_node, sincronice of_changeset_destroy() con las eliminaciones de devlink."
}
],
"id": "CVE-2024-35879",
"lastModified": "2024-11-21T09:21:06.877",
"metrics": {},
"published": "2024-05-19T09:15:09.173",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/3127b2ee50c424a96eb3559fbb7b43cf0b111c7a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/3ee2424107546d882e1ddd75333ca9c32879908c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7b6df050c45a1ea158fd50bc32a8e1447dd1e951"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/801c8b8ec5bfb3519566dff16a5ecd48302fca82"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/8917e7385346bd6584890ed362985c219fe6ae84"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ae6d76e4f06c37a623e357e79d49b17411db6f5c"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/3127b2ee50c424a96eb3559fbb7b43cf0b111c7a"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/3ee2424107546d882e1ddd75333ca9c32879908c"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/7b6df050c45a1ea158fd50bc32a8e1447dd1e951"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/801c8b8ec5bfb3519566dff16a5ecd48302fca82"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/8917e7385346bd6584890ed362985c219fe6ae84"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/ae6d76e4f06c37a623e357e79d49b17411db6f5c"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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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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