CVE-2021-47624

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When the\n3rd argument buf doesn't match with \"offline\", \"online\" or \"remove\", the\nfunction simply returns -EINVAL and forgets to decrease the reference\ncount of a rpc_xprt object and a rpc_xprt_switch object increased by\nrpc_sysfs_xprt_kobj_get_xprt() and\nrpc_sysfs_xprt_kobj_get_xprt_switch(), causing reference count leaks of\nboth unused objects.\n\nFix this issue by jumping to the error handling path labelled with\nout_put when buf matches none of \"offline\", \"online\" or \"remove\"."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net/sunrpc: corrige fugas de recuento de referencias en rpc_sysfs_xprt_state_change Los problemas de fugas de recuento tienen lugar en una ruta de manejo de errores. Cuando el tercer argumento buf no coincide con \"fuera de l\u00ednea\", \"en l\u00ednea\" o \"eliminar\", la funci\u00f3n simplemente devuelve -EINVAL y se olvida de disminuir el recuento de referencias de un objeto rpc_xprt y un objeto rpc_xprt_switch aumentado en rpc_sysfs_xprt_kobj_get_xprt() y rpc_sysfs_xprt_kobj_get_xprt_switch (), lo que provoca fugas en el recuento de referencias de ambos objetos no utilizados. Solucione este problema saltando a la ruta de manejo de errores etiquetada con out_put cuando buf no coincida con \"fuera de l\u00ednea\", \"en l\u00ednea\" o \"eliminar\"."}], "id": "CVE-2021-47624", "lastModified": "2026-06-17T04:18:11.440", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47624", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T16:59:55.305965Z", "version": "2.0.3"}}]}, "published": "2024-07-16T12:15:02.553", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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{}