CVE-2014-9066

NameCVE-2014-9066
DescriptionXen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service (write denial or NMI watchdog timeout and host crash) via a large number of read requests, a different vulnerability than CVE-2014-9065.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: local)

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.lts1-6fixed
jessie4.4.1-9+deb8u8vulnerable
jessie (security)4.4.1-9+deb8u9vulnerable
stretch, sid4.8.1-1+deb9u1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensource(unstable)(unfixed)medium
xensourcesqueeze(not affected)
xensourcewheezy(not affected)

Notes

[jessie] - xen <no-dsa> (Requires invasive changes and only applies to large guests)
[wheezy] - xen <not-affected> (Only affects 4.2 and later)
[squeeze] - xen <not-affected> (Only affects 4.2 and later)

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