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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "DC8CAAEA-FB80-41CC-BECF-346FCF47EFF1", "versionEndExcluding": "4.8.12", "versionStartIncluding": "4.8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h."}, {"lang": "es", "value": "KVM en el kernel de Linux en versiones anteriores a 4.8.12, cuando se habilita I/O APIC, no restringe adecuadamente el \u00edndice VCPU, lo que permite a usuarios de SO invitados obtener privilegios del SO de anfitri\u00f3n o provocar una denegaci\u00f3n de servicio (acceso al array fuera de rango y ca\u00edda del SO anfitri\u00f3n) a trav\u00e9s de una petici\u00f3n interrumpida manipulada, relacionado con arch/x86/kvm/ioapic.c y arch/x86/kvm/ioapic.h."}], "id": "CVE-2016-9777", "lastModified": "2026-05-06T22:30:45.220", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.9, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.1, "impactScore": 6.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2016-12-28T07:59:00.510", "references": [{"source": "secalert@redhat.com", "tags": ["Patch", "Vendor Advisory"], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755"}, {"source": "secalert@redhat.com", "tags": ["Release Notes"], "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Patch"], "url": "http://www.openwall.com/lists/oss-security/2016/12/02/2"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/94640"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1400804"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "http://www.openwall.com/lists/oss-security/2016/12/02/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/94640"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1400804"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "Kernel: kvm: out of bounds memory access via vcpu_id", "id": "1400804", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1400804"}, "csaw": false, "cvss": {"cvss_base_score": "6.5", "cvss_scoring_vector": "AV:A/AC:H/Au:S/C:C/I:C/A:C", "status": "draft"}, "cvss3": {"cvss3_base_score": "8.0", "cvss3_scoring_vector": "CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h."], "name": "CVE-2016-9777", "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-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2016-11-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-9777\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-9777"], "statement": "This issue does not affect the versions of the kernel package as shipped with\nRed Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.", "threat_severity": "Important"}

{}