CVE-2021-47382

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An error path was missed though, that still takes\ndiscipline_mutex and thus has the original deadlock potential.\n\nIntermittent deadlocks were seen when a qeth channel path is configured\noffline, causing a race between qeth_do_reset and ccwgroup_remove.\nCall qeth_set_offline() directly in the qeth_do_reset() error case and\nthen a new variant of ccwgroup_set_offline(), without taking\ndiscipline_mutex."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: s390/qeth: arreglar el punto muerto durante la recuperaci\u00f3n fallida. La confirmaci\u00f3n 0b9902c1fcc5 (\"s390/qeth: arreglar el punto muerto durante la recuperaci\u00f3n\") se elimin\u00f3 tomando discipline_mutex dentro de qeth_do_reset(), solucionando posibles puntos muertos. Sin embargo, se omiti\u00f3 una ruta de error que todav\u00eda requiere discipline_mutex y, por lo tanto, tiene el potencial de bloqueo original. Se observaron interbloqueos intermitentes cuando la ruta de un canal qeth se configura fuera de l\u00ednea, lo que provoc\u00f3 una ejecuci\u00f3n entre qeth_do_reset y ccwgroup_remove. Llame a qeth_set_offline() directamente en el caso de error qeth_do_reset() y luego a una nueva variante de ccwgroup_set_offline(), sin tomar discipline_mutex."}], "id": "CVE-2021-47382", "lastModified": "2026-06-17T04:17:20.463", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47382", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-05-23T18:35:24.941237Z", "version": "2.0.3"}}]}, "published": "2024-05-21T15:15:23.803", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0bfe741741327822d1482c7edef0184636d08b40"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d2b59bd4b06d84a4eadb520b0f71c62fe8ec0a62"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0bfe741741327822d1482c7edef0184636d08b40"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d2b59bd4b06d84a4eadb520b0f71c62fe8ec0a62"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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