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{"acknowledgement": "Red Hat would like to thank Xen project for reporting this issue. Upstream acknowledges Matthew Daley as the original reporter.", "bugzilla": {"description": "kernel: xen: hypercall physdev_get_free_pirq vulnerability", "id": "851165", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=851165"}, "csaw": false, "cvss": {"cvss_base_score": "5.5", "cvss_scoring_vector": "AV:A/AC:L/Au:S/C:N/I:N/A:C", "status": "draft"}, "details": ["The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors."], "name": "CVE-2012-3495", "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": "2012-09-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2012-3495\nhttps://nvd.nist.gov/vuln/detail/CVE-2012-3495"], "statement": "Not vulnerable.\nThis issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.\nThis issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.", "threat_severity": "Moderate"}