{"id":"CVE-2012-4536","url":"https://www.cyber-defence.io/tools/cve/CVE-2012-4536","generatedAt":"2026-10-28T04:30:56.192Z","title":"The (1) domain_pirq_to_emuirq and (2) physdev_unmap_pirq functions in Xen 2.2 allows local guest OS administrators to cause a denial of service (Xen crash) via a crafted pirq value that triggers an out-of-bounds read.","description":"The (1) domain_pirq_to_emuirq and (2) physdev_unmap_pirq functions in Xen 2.2 allows local guest OS administrators to cause a denial of service (Xen crash) via a crafted pirq value that triggers an out-of-bounds read.","published":"2012-11-21T23:55:02.000Z","lastModified":"2026-06-16T23:45:17.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":2.1,"severity":"LOW","vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P"},"cwe":[],"affected":["xen/xen"],"epss":{"score":0.00419,"percentile":0.36058,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.42%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00008.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00009.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html","source":"secalert@redhat.com"},{"url":"http://lists.xen.org/archives/html/xen-announce/2012-11/msg00003.html","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://osvdb.org/87297","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/51200","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/51324","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/51352","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/51413","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/55082","source":"secalert@redhat.com"},{"url":"http://security.gentoo.org/glsa/glsa-201309-24.xml","source":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2012/11/13/2","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/56498","source":"secalert@redhat.com"},{"url":"http://www.securitytracker.com/id?1027760","source":"secalert@redhat.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/80023","source":"secalert@redhat.com"},{"url":"https://security.gentoo.org/glsa/201604-03","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00008.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00009.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.xen.org/archives/html/xen-announce/2012-11/msg00003.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://osvdb.org/87297","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/51200","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/51324","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/51352","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/51413","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/55082","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security.gentoo.org/glsa/glsa-201309-24.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2012/11/13/2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/56498","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1027760","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/80023","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201604-03","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2012-4536","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}