CVE-2019-3016

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The problem mainly affects AMD processors but Intel CPUs cannot be ruled out."}, {"lang": "es", "value": "En un Linux KVM invitado que posee PV TLB habilitado, un proceso en el kernel invitado puede ser capaz de leer ubicaciones de memoria de otro proceso en el mismo invitado. Este problema se limita al host que ejecuta Linux Kernel versi\u00f3n 4.10 con un invitado que ejecuta Linux Kernel versi\u00f3n 4.16 o posterior. El problema afecta principalmente a los procesadores AMD, pero las CPU Intel no se pueden descartar."}], "id": "CVE-2019-3016", "lastModified": "2026-06-17T02:35:03.577", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 1.9, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "secalert_us@oracle.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N", "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-2019-3016", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-30T15:00:50.015330Z", "version": "2.0.3"}}]}, "published": "2020-01-31T20:15:11.070", "references": [{"source": "secalert_us@oracle.com", "url": "http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html"}, {"source": "secalert_us@oracle.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2020/01/30/4"}, {"source": "secalert_us@oracle.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1792167"}, {"source": "secalert_us@oracle.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/1eff70a9abd46f175defafd29bc17ad456f398a7"}, {"source": "secalert_us@oracle.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/8c6de56a42e0c657955e12b882a81ef07d1d073e"}, {"source": "secalert_us@oracle.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/917248144db5d7320655dbb41d3af0b8a0f3d589"}, {"source": "secalert_us@oracle.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/a6bd811f1209fe1c64c9f6fd578101d6436c6b6e"}, {"source": "secalert_us@oracle.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/b043138246a41064527cf019a3d51d9f015e9796"}, {"source": "secalert_us@oracle.com", "url": "https://lore.kernel.org/lkml/1580407316-11391-1-git-send-email-pbonzini%40redhat.com/"}, {"source": "secalert_us@oracle.com", "url": "https://security.netapp.com/advisory/ntap-20200313-0003/"}, {"source": "secalert_us@oracle.com", "url": "https://usn.ubuntu.com/4300-1/"}, {"source": "secalert_us@oracle.com", "url": "https://usn.ubuntu.com/4301-1/"}, {"source": "secalert_us@oracle.com", "url": "https://www.debian.org/security/2020/dsa-4699"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2020/01/30/4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1792167"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/1eff70a9abd46f175defafd29bc17ad456f398a7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/8c6de56a42e0c657955e12b882a81ef07d1d073e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/917248144db5d7320655dbb41d3af0b8a0f3d589"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/a6bd811f1209fe1c64c9f6fd578101d6436c6b6e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.kernel.org/linus/b043138246a41064527cf019a3d51d9f015e9796"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lore.kernel.org/lkml/1580407316-11391-1-git-send-email-pbonzini%40redhat.com/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20200313-0003/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4300-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4301-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.debian.org/security/2020/dsa-4699"}], "sourceIdentifier": "secalert_us@oracle.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-362"}], "source": "secalert_us@oracle.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2020:3016", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-193.13.2.rt13.65.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-21T00:00:00Z"}, {"advisory": "RHSA-2020:3010", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-193.13.2.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-07-21T00:00:00Z"}], "bugzilla": {"description": "kernel: kvm: Information leak within a KVM guest", "id": "1792167", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1792167"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N", "status": "verified"}, "cwe": "CWE-362->CWE-200", "details": ["In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out.", "A flaw was found in the way Linux kernel's KVM hypervisor handled deferred TLB flush requests from guest. A race condition may occur between the guest issuing a deferred TLB flush request to KVM, and then KVM handling and acknowledging it. This may result in invalid address translations from TLB being used to access guest memory, leading to a potential information leakage issue. An attacker may use this flaw to access guest memory locations that it should not have access to."], "mitigation": {"lang": "en:us", "value": "This issue can only be resolved by applying updates.\nMitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2019-3016", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2020-01-30T18:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-3016\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-3016\nhttps://www.openwall.com/lists/oss-security/2020/01/30/4"], "threat_severity": "Low"}

{}