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To prevent this, we have to acquire a reference to it\nfirst by calling hub_get()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: USB: core: corrige el punto muerto en el atributo sysfs \"disable\" del puerto. Las rutinas de devoluci\u00f3n de llamada para mostrar y almacenar para el archivo del atributo sysfs \"disable\" en port.c adquieren el bloqueo del dispositivo para el puerto. dispositivo central principal. Esto puede causar problemas si otro proceso ha bloqueado el concentrador para eliminarlo o cambiar su configuraci\u00f3n: Quitar el concentrador o cambiar su configuraci\u00f3n requiere que se elimine la interfaz del concentrador, lo que requiere que se elimine el dispositivo del puerto, y device_del() espera hasta que todo Se han devuelto devoluciones de llamadas de atributos sysfs pendientes para los puertos. El bloqueo no podr\u00e1 desbloquearse hasta entonces. Pero la rutina enable_show() o enable_store() no puede regresar hasta que haya adquirido el bloqueo. El punto muerto resultante se puede evitar llamando a sysfs_break_active_protection(). Esto har\u00e1 que el n\u00facleo de sysfs no espere a que regrese la rutina de devoluci\u00f3n de llamada del atributo, lo que permitir\u00e1 que contin\u00fae la eliminaci\u00f3n. La desventaja es que despu\u00e9s de realizar esta llamada, no hay garant\u00eda de que la estructura del centro no se desasignar\u00e1 en ning\u00fan momento. Para evitar esto, primero debemos adquirir una referencia llamando a hub_get()."}], "id": "CVE-2024-26933", "lastModified": "2024-11-21T09:03:25.203", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "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"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-05-01T06:15:07.930", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4facc9421117ba9d8148c73771b213887fec77f7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/73d1589b91f2099e5f6534a8497b7c6b527e064e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9dac54f08198147f5ec0ec52fcf1bc8ac899ac05"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f4d1960764d8a70318b02f15203a1be2b2554ca1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f51849833705dea5b4f9b0c8de714dd87bd6c95c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4facc9421117ba9d8148c73771b213887fec77f7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/73d1589b91f2099e5f6534a8497b7c6b527e064e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9dac54f08198147f5ec0ec52fcf1bc8ac899ac05"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f4d1960764d8a70318b02f15203a1be2b2554ca1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f51849833705dea5b4f9b0c8de714dd87bd6c95c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:3627", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:3618", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.5.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}], "bugzilla": {"description": "kernel: USB: core: Fix deadlock in port "disable" sysfs attribute", "id": "2278240", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278240"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nUSB: core: Fix deadlock in port \"disable\" sysfs attribute\nThe show and store callback routines for the \"disable\" sysfs attribute\nfile in port.c acquire the device lock for the port's parent hub\ndevice. This can cause problems if another process has locked the hub\nto remove it or change its configuration:\nRemoving the hub or changing its configuration requires the\nhub interface to be removed, which requires the port device\nto be removed, and device_del() waits until all outstanding\nsysfs attribute callbacks for the ports have returned. The\nlock can't be released until then.\nBut the disable_show() or disable_store() routine can't return\nuntil after it has acquired the lock.\nThe resulting deadlock can be avoided by calling\nsysfs_break_active_protection(). This will cause the sysfs core not\nto wait for the attribute's callback routine to return, allowing the\nremoval to proceed. The disadvantage is that after making this call,\nthere is no guarantee that the hub structure won't be deallocated at\nany moment. To prevent this, we have to acquire a reference to it\nfirst by calling hub_get()."], "name": "CVE-2024-26933", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26933\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26933\nhttps://lore.kernel.org/linux-cve-announce/2024050123-CVE-2024-26933-c18d@gregkh/T"], "threat_severity": "Low"}

{}