CVE-2016-9386

NameCVE-2016-9386
DescriptionThe x86 emulator in Xen does not properly treat x86 NULL segments as unusable when accessing memory, which might allow local HVM guest users to gain privileges via vectors involving "unexpected" base/limit values.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-720-1, DSA-3729-1
NVD severitymedium
Debian Bugs845663

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xen (PTS)stretch (security), stretch4.8.5.final+shim4.10.4-1+deb9u12fixed
buster4.11.4+37-g3263f257ca-1fixed
buster (security)4.11.4+57-g41a822c392-2fixed
bullseye, sid4.14.0+88-g1d1d1f5391-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensourcewheezy4.1.6.lts1-4DLA-720-1
xensourcejessie4.4.1-9+deb8u8DSA-3729-1
xensource(unstable)4.8.0-1845663

Notes

https://xenbits.xen.org/xsa/advisory-191.html

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