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.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-2544-1 xen security update
EUVD EUVD EUVD-2012-3450 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
Link Providers
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html cve-icon cve-icon
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html cve-icon cve-icon
http://osvdb.org/85197 cve-icon cve-icon
http://secunia.com/advisories/50472 cve-icon cve-icon
http://secunia.com/advisories/50530 cve-icon cve-icon
http://secunia.com/advisories/51413 cve-icon cve-icon
http://secunia.com/advisories/55082 cve-icon cve-icon
http://security.gentoo.org/glsa/glsa-201309-24.xml cve-icon cve-icon
http://support.citrix.com/article/CTX134708 cve-icon cve-icon
http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability cve-icon cve-icon
http://www.debian.org/security/2012/dsa-2544 cve-icon cve-icon
http://www.openwall.com/lists/oss-security/2012/09/05/5 cve-icon cve-icon
http://www.securityfocus.com/bid/55400 cve-icon cve-icon
http://www.securitytracker.com/id?1027479 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=851139 cve-icon cve-icon
https://exchange.xforce.ibmcloud.com/vulnerabilities/78265 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2012-3494 cve-icon
https://security.gentoo.org/glsa/201604-03 cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2012-3494 cve-icon
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T20:05:12.655Z

Reserved: 2012-06-14T00:00:00

Link: CVE-2012-3494

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2012-11-23T20:55:03.057

Modified: 2025-04-11T00:51:21.963

Link: CVE-2012-3494

cve-icon Redhat

Severity : Moderate

Publid Date: 2012-09-05T00:00:00Z

Links: CVE-2012-3494 - Bugzilla

cve-icon OpenCVE Enrichment

No data.