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{"affected_release": [{"advisory": "RHSA-2011:0017", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "kernel-0:2.6.18-238.el5", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2011-01-13T00:00:00Z"}], "bugzilla": {"description": "xen: 64-bit PV xen guest can crash host by accessing hypervisor per-domain memory area", "id": "658155", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=658155"}, "csaw": false, "cvss": {"cvss_base_score": "6.1", "cvss_scoring_vector": "AV:A/AC:L/Au:N/C:N/I:N/A:C", "status": "verified"}, "details": ["The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access."], "name": "CVE-2010-4255", "public_date": "2010-11-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2010-4255\nhttps://nvd.nist.gov/vuln/detail/CVE-2010-4255"], "threat_severity": "Moderate"}