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{"acknowledgement": "Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Ian Jackson (Citrix) as the original reporter.", "bugzilla": {"description": "xen: x86 PVH guest without LAPIC may DoS the host (XSA-256)", "id": "1544453", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1544453"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "status": "draft"}, "details": ["An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC."], "name": "CVE-2018-7542", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "xen", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2018-02-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-7542\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-7542\nhttp://xenbits.xen.org/xsa/advisory-256.html"], "threat_severity": "Moderate"}