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{"acknowledgement": "Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Andrew Cooper (Citrix) as the original reporter.", "bugzilla": {"description": "xen: x86: PKRU and BND* leakage between vCPU-s (XSA-220)", "id": "1458874", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1458874"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.0", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:H", "status": "draft"}, "details": ["The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220."], "name": "CVE-2017-10916", "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-2017-10916\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-10916\nhttp://xenbits.xen.org/xsa/advisory-220.html"], "threat_severity": "Important"}