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{"acknowledgement": "Red Hat would like to thank Xen for reporting this issue.", "bugzilla": {"description": "kernel: xen: Insufficient restrictions on certain MMU update hypercalls (xsa109)", "id": "1160664", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1160664"}, "csaw": false, "cvss": {"cvss_base_score": "4.3", "cvss_scoring_vector": "AV:A/AC:H/Au:S/C:N/I:N/A:C", "status": "draft"}, "details": ["The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP)."], "name": "CVE-2014-8594", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel-xen", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2014-11-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2014-8594\nhttps://nvd.nist.gov/vuln/detail/CVE-2014-8594\nhttp://xenbits.xen.org/xsa/advisory-109.html"], "statement": "Not vulnerable.\nThis issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.", "threat_severity": "Low"}