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{"acknowledgement": "Red Hat would like to thank Marc Orr (Google.com) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2019:2741", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-80.11.1.rt9.156.el8_0", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2019-09-12T00:00:00Z"}, {"advisory": "RHSA-2019:2703", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-80.11.1.el8_0", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2019-09-12T00:00:00Z"}], "bugzilla": {"description": "Kernel: KVM: nVMX: guest accesses L0 MSR causes potential DoS", "id": "1695044", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1695044"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H", "status": "verified"}, "cwe": "CWE-863", "details": ["A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.", "A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Register (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue."], "name": "CVE-2019-3887", "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": "2019-04-05T16:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-3887\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-3887"], "statement": "This issue does not affect the version of the kernel package as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.", "threat_severity": "Important"}