{"id":"CVE-2014-7156","aliases":["DEBIAN-CVE-2014-7156","DSA-3041-1","EUVD-2014-7033","GHSA-fwm9-x5p7-wwvw","SUSE-SU-2015:0940-1","UBUNTU-CVE-2014-7156","openSUSE-SU-2024:10196-1"],"status":"published","title":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does...","description":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.","severity":{"version":"2.0","score":3.3,"vector":"AV:A/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00849,"percentile":0.58363,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-264"],"published":"2012-11-22T17:59:15Z","modified":"2026-10-23T15:47:28Z","fixes":[{"ecosystem":"Debian:12","package":"xen","fixed_in":["4.4.1-3"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"xen","fixed_in":["4.4.1-3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"xen","fixed_in":["4.4.1-3"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"xen","fixed_in":["4.4.0-0ubuntu5.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.1-3"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.1-3"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.1-3"}]}]},{"source":"osv","ecosystem":"Debian:7","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.4-3+deb7u3"}]}],"versions":["4.1.4-3","4.1.4-3+deb7u1","4.1.4-3+deb7u2"],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.0-0ubuntu5.2"}]}],"versions":["4.3.0-1ubuntu1","4.3.0-1ubuntu2","4.3.0-1ubuntu3","4.3.0-1ubuntu4","4.3.0-1ubuntu5","4.4.0-0ubuntu3","4.4.0-0ubuntu4","4.4.0-0ubuntu5","4.4.0-0ubuntu5.1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.0_12-1.3"}]}],"bundled":124}],"products":[{"vendor":"xen","product":"xen"}],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://xenbits.xen.org/xsa/advisory-106.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","advisory","fix","report"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://support.citrix.com/article/CTX200218","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/70062","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://www.securitytracker.com/id/1030889","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","web"]},{"url":"http://www.debian.org/security/2014/dsa-3041","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/61858","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/61890","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/61500","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://security.gentoo.org/glsa/glsa-201412-42.xml","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2014-7156"},{"url":"https://github.com/advisories/GHSA-fwm9-x5p7-wwvw"},{"url":"https://security-tracker.debian.org/tracker/CVE-2014-7156","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2015/suse-su-20150940-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/777628","tags":["report"]},{"url":"https://bugzilla.suse.com/789944","tags":["report"]},{"url":"https://bugzilla.suse.com/789945","tags":["report"]},{"url":"https://bugzilla.suse.com/789948","tags":["report"]},{"url":"https://bugzilla.suse.com/789950","tags":["report"]},{"url":"https://bugzilla.suse.com/789951","tags":["report"]},{"url":"https://bugzilla.suse.com/826717","tags":["report"]},{"url":"https://bugzilla.suse.com/880751","tags":["report"]},{"url":"https://bugzilla.suse.com/895798","tags":["report"]},{"url":"https://bugzilla.suse.com/895799","tags":["report"]},{"url":"https://bugzilla.suse.com/895802","tags":["report"]},{"url":"https://bugzilla.suse.com/903850","tags":["report"]},{"url":"https://bugzilla.suse.com/903967","tags":["report"]},{"url":"https://bugzilla.suse.com/903970","tags":["report"]},{"url":"https://bugzilla.suse.com/905465","tags":["report"]},{"url":"https://bugzilla.suse.com/905467","tags":["report"]},{"url":"https://bugzilla.suse.com/906439","tags":["report"]},{"url":"https://bugzilla.suse.com/927967","tags":["report"]},{"url":"https://bugzilla.suse.com/929339","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2012-5510","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-5511","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-5513","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-5514","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-5515","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-3495","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-4021","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-7154","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-7155","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-7156","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-8594","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-8595","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-8866","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-8867","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-9030","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-3340","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-3456","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2014-7156","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2014-7156","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2011-1898","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-0029","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-0217","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-2625","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-3432","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-3433","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-4411","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-4535","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-4536","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-4537","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-201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s://www.suse.com/security/cve/CVE-2015-8554","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8555","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8558","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8567","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8568","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8613","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8615","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8619","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8743","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8744","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8745","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-1568","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-1570","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-1571","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-1714","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-1922","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-1981","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2198","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2270","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2271","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2391","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2392","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2538","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2841","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-4439","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-4441","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-5238","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-5338","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-6258","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-6259","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-6351","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-7092","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-7093","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-7094","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2014-7156","description":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.","status":"published","published":"2014-10-02T14:00:00Z","modified":"2024-08-06T12:40:19.058Z","updated_at":"2026-11-02T14:33:46.631905Z"}],"euvd":[{"id":"EUVD-2014-7033","description":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.","status":"published","published":"2014-10-02T14:00:00Z","modified":"2024-08-06T12:40:19Z","updated_at":"2026-11-03T01:56:56.402913Z"}],"ghsa":[{"id":"GHSA-fwm9-x5p7-wwvw","title":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does...","description":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.","status":"published","published":"2022-05-14T02:13:57Z","modified":"2023-02-02T05:05:24Z","updated_at":"2026-11-02T14:52:06.598736Z"}],"nvd":[{"id":"CVE-2014-7156","description":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.","status":"published","published":"2014-10-02T14:55:05.167Z","modified":"2026-06-17T00:14:27.737Z","cvss":[{"version":"2.0","score":3.3,"vector":"AV:A/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:02:56.266125Z"}],"osv":[{"id":"CVE-2014-7156","description":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.","status":"published","published":"2014-10-02T14:55:05Z","modified":"2026-04-10T03:44:00.486067Z","updated_at":"2026-11-02T15:43:59.654289Z"},{"id":"DEBIAN-CVE-2014-7156","description":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.","status":"published","published":"2014-10-02T14:55:05.167Z","modified":"2026-10-23T15:47:28.476388285Z","updated_at":"2026-11-02T15:45:26.134753Z"},{"id":"DSA-3041-1","title":"xen - security update","status":"published","published":"2014-10-01T00:00:00Z","modified":"2026-03-09T01:19:44.078887Z","updated_at":"2026-11-02T15:46:15.843838Z"},{"id":"openSUSE-SU-2024:10196-1","title":"xen-4.7.0_12-1.3 on GA media","description":"These are all security issues fixed in the xen-4.7.0_12-1.3 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:08:39.408456Z","updated_at":"2026-11-02T16:58:33.135986Z"},{"id":"SUSE-SU-2015:0940-1","title":"Security update for Xen","description":"\nThis update fixes the following security issues in Xen:\n\n    * CVE-2012-5510: Grant table version switch list corruption\n      vulnerability (XSA-26)\n    * CVE-2012-5511: Several HVM operations do not validate the range of\n      their inputs (XSA-27)\n    * CVE-2012-5513: XENMEM_exchange may overwrite hypervisor memory\n      (XSA-29)\n    * CVE-2012-5514: Missing unlock in\n      guest_physmap_mark_populate_on_demand() (XSA-30)\n    * CVE-2012-5515: Several memory hypercall operations allow invalid\n      extent order values (XSA-31)\n\nAlso the following fix has been applied:\n\n    * bnc#777628 - guest 'disappears' after live migration\n      Updated block-dmmd script\n\nSecurity Issues references:\n\n    * CVE-2012-5513\n      \u003chttp://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5513\u003e\n    * CVE-2012-5514\n      \u003chttp://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5514\u003e\n    * CVE-2012-5511\n      \u003chttp://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5511\u003e\n    * CVE-2012-5510\n      \u003chttp://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5510\u003e\n    * CVE-2012-5515\n      \u003chttp://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5515\u003e\n\n","status":"published","published":"2012-11-22T17:59:15Z","modified":"2026-02-04T02:24:40.497699Z","updated_at":"2026-11-02T15:53:41.276824Z"},{"id":"UBUNTU-CVE-2014-7156","description":"The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.","status":"published","published":"2014-10-02T14:55:00Z","modified":"2026-04-22T09:48:55.953873Z","updated_at":"2026-11-02T15:54:09.378953Z"}]}}