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CVE Reference: CVE-2012-3494

NOTE: The text on this page is written by CVE MITRE and reflects neither the opinions of Secunia or the results of our research. All data on this page is written and maintained by CVE MITRE.

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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