CVE-2024-36896

{"id": "CVE-2024-36896", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "published": "2024-05-30T16:15:13.023", "references": [{"url": "https://git.kernel.org/stable/c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6119ef6517ce501fc548154691abdaf1f954a277", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/63533549ff53d24daf47c443dbd43c308afc3434", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a4b46d450c49f32e9d4247b421e58083fde304ce", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: core: Fix access violation during port device removal\n\nTesting with KASAN and syzkaller revealed a bug in port.c:disable_store():\nusb_hub_to_struct_hub() can return NULL if the hub that the port belongs to\nis concurrently removed, but the function does not check for this\npossibility before dereferencing the returned value.\n\nIt turns out that the first dereference is unnecessary, since hub->intfdev\nis the parent of the port device, so it can be changed easily. Adding a\ncheck for hub == NULL prevents further problems.\n\nThe same bug exists in the disable_show() routine, and it can be fixed the\nsame way."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: USB: core: corrige la infracci\u00f3n de acceso durante la eliminaci\u00f3n del dispositivo del puerto. Las pruebas con KASAN y syzkaller revelaron un error en port.c:disable_store(): usb_hub_to_struct_hub() puede devolver NULL si el hub que el puerto al que pertenece se elimina simult\u00e1neamente, pero la funci\u00f3n no comprueba esta posibilidad antes de desreferenciar el valor devuelto. Resulta que la primera desreferencia es innecesaria, ya que hub->intfdev es el padre del dispositivo portuario, por lo que se puede cambiar f\u00e1cilmente. Agregar una verificaci\u00f3n para hub == NULL evita m\u00e1s problemas. El mismo error existe en la rutina enable_show() y se puede solucionar de la misma manera."}], "lastModified": "2024-07-03T02:03:44.757", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}