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{"acknowledgement": "Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Jann Horn (Google) as the original reporter.", "bugzilla": {"description": "xen: DoS via non-preemptable L3/L4 pagetable freeing (XSA-252)", "id": "1544456", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1544456"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.0", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H", "status": "draft"}, "details": ["An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing."], "name": "CVE-2018-7540", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "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-2018-7540\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-7540\nhttp://xenbits.xen.org/xsa/advisory-252.html"], "threat_severity": "Moderate"}