CVE Reference: CVE-2012-3494

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Original Page at CVE MITRE:
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.

CVE Status:
Candidate

References:

XF
  http://xforce.iss.net/xforce/xfdb/78265

SUSE
  http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
  http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
  http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html
  http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
  http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
  http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
  http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html
  http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
  http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html

ST
  1027479

SAID
  Secunia Advisory: SA50472
  Secunia Advisory: SA50530
  Secunia Advisory: SA51413
  Secunia Advisory: SA55082

OSVDB
  85197

MLIST
  http://www.openwall.com/lists/oss-security/2012/09/05/5
  http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html

MISC
  http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability

GENTOO
  http://security.gentoo.org/glsa/glsa-201309-24.xml

DEBIAN
  http://www.debian.org/security/2012/dsa-2544

CONFIRM
  http://support.citrix.com/article/CTX134708

BID
  55400


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