{ "id": "CVE-2021-3640", "sourceIdentifier": "secalert@redhat.com", "published": "2022-03-03T23:15:08.197", "lastModified": "2023-02-12T23:41:41.777", "vulnStatus": "Modified", "descriptions": [ { "lang": "en", "value": "A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system." }, { "lang": "es", "value": "Se encontr\u00f3 un fallo de uso de memoria previamente liberada en la funci\u00f3n sco_sock_sendmsg() del subsistema HCI del kernel de Linux en la forma en que el usuario llama a ioct UFFDIO_REGISTER o de otra manera desencadena una condici\u00f3n de carrera de la llamada sco_conn_del() junto con la llamada sco_sock_sendmsg() con la p\u00e1gina de memoria de fallo controlable esperada. Un usuario local privilegiado podr\u00eda usar este fallo para bloquear el sistema o escalar sus privilegios en el sistema" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH" }, "exploitabilityScore": 1.0, "impactScore": 5.9 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "accessVector": "LOCAL", "accessComplexity": "MEDIUM", "authentication": "NONE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "baseScore": 6.9 }, "baseSeverity": "MEDIUM", 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"Vendor Advisory" ] }, { "url": "https://github.com/torvalds/linux/commit/99c23da0eed4fd20cae8243f2b51e10e66aa0951", "source": "secalert@redhat.com", "tags": [ "Patch", "Third Party Advisory" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html", "source": "secalert@redhat.com", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html", "source": "secalert@redhat.com", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://security.netapp.com/advisory/ntap-20220419-0003/", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://ubuntu.com/security/CVE-2021-3640", "source": "secalert@redhat.com", "tags": [ "Patch", "Third Party Advisory" ] }, { "url": "https://www.debian.org/security/2022/dsa-5096", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://www.openwall.com/lists/oss-security/2021/07/22/1", "source": "secalert@redhat.com", "tags": [ "Exploit", "Mailing List", "Third Party Advisory" ] } ] }