CVE-2012-3494

NameCVE-2012-3494
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-2544-1
NVD severitylow (attack range: local)
Debian Bugs686764

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xen (PTS)wheezy4.1.4-3+deb7u9fixed
wheezy (security)4.1.6.1-1+deb7u1fixed
jessie4.4.1-9+deb8u5fixed
jessie (security)4.4.1-9+deb8u6fixed
stretch, sid4.6.0-1+nmu2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensource(unstable)4.1.3-2low686764
xensourcesqueeze4.0.1-5.4lowDSA-2544-1

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