cve-2024-35879
Vulnerability from cvelistv5
Published
2024-05-19 08:34
Modified
2024-11-05 09:24
Severity ?
Summary
of: dynamic: Synchronize of_changeset_destroy() with the devlink removals
Impacted products
Vendor Product Version
Linux Linux Version: 5.13
Show details on NVD website


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    "datePublished": "2024-05-19T08:34:36.450Z",
    "dateReserved": "2024-05-17T13:50:33.111Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-35879\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-19T09:15:09.173\",\"lastModified\":\"2024-11-05T10:16:48.390\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"}],\"metrics\":{},\"references\":[{\"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\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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