Unrated severityNVD Advisory· Published Nov 23, 2012· Updated Jun 16, 2026
CVE-2012-3494
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10cpe:2.3:a:citrix:xenserver:*:-:*:*:*:*:x64:*+ 2 more
- cpe:2.3:a:citrix:xenserver:*:-:*:*:*:*:x64:*range: <=6.0.2
- cpe:2.3:a:citrix:xenserver:*:-:*:*:*:*:x86:*range: <=6.0.2
- (no CPE)range: <=6.0.2
cpe:2.3:o:xen:xen:4.0.0:-:*:*:*:*:x64:*+ 6 more
- cpe:2.3:o:xen:xen:4.0.0:-:*:*:*:*:x64:*
- cpe:2.3:o:xen:xen:4.0.0:-:*:*:*:*:x86:*
- cpe:2.3:o:xen:xen:4.1.0:-:*:*:*:*:x64:*
- cpe:2.3:o:xen:xen:4.1.0:-:*:*:*:*:x86:*
- cpe:2.3:o:xen:xen:4.2.0:-:*:*:*:*:x64:*
- cpe:2.3:o:xen:xen:4.2.0:-:*:*:*:*:x86:*
- (no CPE)range: 4.0, 4.1, 4.2
Patches
Vulnerability mechanics
References
25- support.citrix.com/article/CTX134708nvdPatchVendor Advisory
- secunia.com/advisories/50472nvdVendor Advisory
- secunia.com/advisories/50530nvdVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.htmlnvd
- lists.xen.org/archives/html/xen-announce/2012-09/msg00000.htmlnvd
- osvdb.org/85197nvd
- secunia.com/advisories/51413nvd
- secunia.com/advisories/55082nvd
- security.gentoo.org/glsa/glsa-201309-24.xmlnvd
- wiki.xen.org/wiki/Security_Announcementsnvd
- www.debian.org/security/2012/dsa-2544nvd
- www.openwall.com/lists/oss-security/2012/09/05/5nvd
- www.securityfocus.com/bid/55400nvd
- www.securitytracker.com/idnvd
- bugzilla.redhat.com/show_bug.cginvd
- exchange.xforce.ibmcloud.com/vulnerabilities/78265nvd
- security.gentoo.org/glsa/201604-03nvd
News mentions
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