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{"acknowledgement": "Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Ankur Arora (Oracle) as the original reporter.", "bugzilla": {"description": "xen: NULL pointer deref in event channel poll (XSA-221)", "id": "1458875", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1458875"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221."], "name": "CVE-2017-10917", "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": "2017-06-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-10917\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-10917\nhttp://xenbits.xen.org/xsa/advisory-221.html"], "threat_severity": "Important"}