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This means that\na sysfs read can trigger a NULL pointer error by deferencing dp->hpd in\nhpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns\nNULL in those cases.\n\nRemove manual sysfs node creation in favor of adding attribute group as\ndefault for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is\nnot used here otherwise the path to the sysfs nodes is no longer compliant\nwith the ABI."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: usb: typec: altmodes/displayport: cree nodos sysfs como grupo de atributos de dispositivo predeterminado del controlador Los nodos sysfs del controlador DisplayPort pueden estar presentes en el espacio de usuario antes de que typec_altmode_set_drvdata() se complete en dp_altmode_probe. Esto significa que una lectura de sysfs puede desencadenar un error de puntero NULL al hacer una diferencia entre dp->hpd en hpd_show o dp->lock en pin_assignment_show, ya que dev_get_drvdata() devuelve NULL en esos casos. Elimine la creaci\u00f3n manual de nodos sysfs en favor de agregar un grupo de atributos como predeterminado para los dispositivos vinculados al controlador. La macro ATTRIBUTE_GROUPS() no se utiliza aqu\u00ed; de lo contrario, la ruta a los nodos sysfs ya no cumple con la ABI."}], "id": "CVE-2024-35790", "lastModified": "2025-05-22T13:15:53.603", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}]}, "published": "2024-05-17T13:15:58.800", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/0ad011776c057ce881b7fd6d8c79ecd459c087e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/165376f6b23e9a779850e750fb2eb06622e5a531"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/4a22aeac24d0d5f26ba741408e8b5a4be6dc5dc0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9794ffd9d0c39ee070fbd733f862bbe89b28ba33"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f1c5ddaef506e3517dce338c08a60663b1521920"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/0ad011776c057ce881b7fd6d8c79ecd459c087e9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/165376f6b23e9a779850e750fb2eb06622e5a531"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/4a22aeac24d0d5f26ba741408e8b5a4be6dc5dc0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "[email protected]", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:5102", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.16.1.rt7.357.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5101", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.16.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}], "bugzilla": {"description": "kernel: usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group", "id": "2281054", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281054"}, "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: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group\nThe DisplayPort driver's sysfs nodes may be present to the userspace before\ntypec_altmode_set_drvdata() completes in dp_altmode_probe. This means that\na sysfs read can trigger a NULL pointer error by deferencing dp->hpd in\nhpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns\nNULL in those cases.\nRemove manual sysfs node creation in favor of adding attribute group as\ndefault for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is\nnot used here otherwise the path to the sysfs nodes is no longer compliant\nwith the ABI."], "name": "CVE-2024-35790", "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": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Under investigation", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35790\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35790\nhttps://lore.kernel.org/linux-cve-announce/2024051708-CVE-2024-35790-6a80@gregkh/T"], "threat_severity": "Low"}