{"id":"CVE-2012-3494","aliases":["DEBIAN-CVE-2012-3494","DSA-2544-1","EUVD-2012-3450","GHSA-6p48-jg39-2mq7"],"status":"published","title":"The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix...","description":"The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.","severity":{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00437,"percentile":0.38205,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-264"],"published":"2012-09-08T00:00:00Z","modified":"2026-10-23T17:47:45Z","fixes":[{"ecosystem":"Debian:12","package":"xen","fixed_in":["4.1.3-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"xen","fixed_in":["4.1.3-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"xen","fixed_in":["4.1.3-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.3-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.3-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.3-2"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.1-5.4"}]}],"versions":["4.0.1-2","4.0.1-4","4.0.1-5","4.0.1-5.1","4.0.1-5.2","4.0.1-5.3"],"bundled":2}],"products":[{"vendor":"citrix","product":"xenserver"},{"vendor":"xen","product":"xen"}],"references":[{"url":"http://secunia.com/advisories/55082","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/50530","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"http://secunia.com/advisories/51413","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://security.gentoo.org/glsa/glsa-201309-24.xml","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=851139","tags":["x_refsource_MISC","x_transferred","report"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://secunia.com/advisories/50472","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.securityfocus.com/bid/55400","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2012/09/05/5","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/201604-03","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/78265","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://support.citrix.com/article/CTX134708","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://osvdb.org/85197","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","web"]},{"url":"http://www.securitytracker.com/id?1027479","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://www.debian.org/security/2012/dsa-2544","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-3494"},{"url":"https://github.com/advisories/GHSA-6p48-jg39-2mq7"},{"url":"https://security-tracker.debian.org/tracker/CVE-2012-3494","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2012-3494","description":"The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.","status":"published","published":"2012-11-23T20:00:00Z","modified":"2024-08-06T20:05:12.655Z","updated_at":"2026-11-02T14:34:50.615647Z"}],"euvd":[{"id":"EUVD-2012-3450","description":"The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.","status":"published","published":"2012-11-23T20:00:00Z","modified":"2024-08-06T20:05:12Z","updated_at":"2026-11-03T01:56:10.882899Z"}],"ghsa":[{"id":"GHSA-6p48-jg39-2mq7","title":"The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix...","description":"The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.","status":"published","published":"2022-05-17T01:44:00Z","modified":"2023-02-03T05:05:15Z","updated_at":"2026-11-02T14:53:42.900002Z"}],"nvd":[{"id":"CVE-2012-3494","description":"The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.","status":"published","published":"2012-11-23T20:55:03.057Z","modified":"2026-06-16T23:43:20.17Z","cvss":[{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:02:16.536025Z"}],"osv":[{"id":"CVE-2012-3494","description":"The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.","status":"published","published":"2012-11-23T20:55:03Z","modified":"2026-04-10T03:44:18.435519Z","updated_at":"2026-11-02T15:43:58.537032Z"},{"id":"DEBIAN-CVE-2012-3494","description":"The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.","status":"published","published":"2012-11-23T20:55:03.057Z","modified":"2026-10-23T17:47:45.930726176Z","updated_at":"2026-11-02T15:45:24.92418Z"},{"id":"DSA-2544-1","title":"xen - denial of service","status":"published","published":"2012-09-08T00:00:00Z","modified":"2026-03-09T01:18:29.491281Z","updated_at":"2026-11-02T15:46:15.489951Z"}]}}