CVE-2012-3494
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.43% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 37.6% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2012-11-23 20:00Z13 YR AGO
- Last updated
- 2024-08-06 20:05Z2 YR AGO
- Reserved
- 2012-06-14
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 8e274a53b561446ade49da4545b1b67968e3f3a037fab690fc141b9880e31052
05 Affected products
06 References
- secunia.com55082http://secunia.com/advisories/55082
- secunia.com50530http://secunia.com/advisories/50530
- secunia.com51413http://secunia.com/advisories/51413
- security.gentoo.orgGLSA-201309-24http://security.gentoo.org/glsa/glsa-201309-24.xml
- lists.opensuse.orgSUSE-SU-2012:1135http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
- wiki.xen.orghttp://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=851139
- lists.opensuse.orgopenSUSE-SU-2012:1572http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
- secunia.com50472http://secunia.com/advisories/50472
- www.securityfocus.com55400http://www.securityfocus.com/bid/55400
- www.openwall.com[oss-security] 20120905 Xen Security Advisory 12 (CVE-2012-3494) - hypercall set_debugreg vulnerabilityhttp://www.openwall.com/lists/oss-security/2012/09/05/5
- lists.opensuse.orgSUSE-SU-2012:1162http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html
- lists.opensuse.orgopenSUSE-SU-2012:1174http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
- security.gentoo.orgGLSA-201604-03https://security.gentoo.org/glsa/201604-03
- exchange.xforce.ibmcloud.comxen-setdebugreg-dos(78265)https://exchange.xforce.ibmcloud.com/vulnerabilities/78265
- lists.opensuse.orgSUSE-SU-2012:1132http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
- support.citrix.comhttp://support.citrix.com/article/CTX134708
- lists.xen.org[Xen-announce] 20120905 Xen Security Advisory 12 (CVE-2012-3494) - hypercall set_debugreg vulnerabilityhttp://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html
- lists.opensuse.orgSUSE-SU-2012:1129http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html
- lists.opensuse.orgSUSE-SU-2012:1133http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
- osvdb.org85197http://osvdb.org/85197
- www.securitytracker.com1027479http://www.securitytracker.com/id?1027479
- lists.opensuse.orgopenSUSE-SU-2012:1573http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
- lists.opensuse.orgopenSUSE-SU-2012:1172http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
- www.debian.orgDSA-2544http://www.debian.org/security/2012/dsa-2544
07 Fixed in
Debian 12
- xen Fixed in 4.1.3-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- xen Fixed in 4.1.3-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- xen Fixed in 4.1.3-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.