CVE-2018-18883

NameCVE-2018-18883
DescriptionAn issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecified other impact because nested VT-x is not properly restricted.
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)
NVD severityhigh (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xen (PTS)jessie4.4.1-9+deb8u10fixed
jessie (security)4.4.4lts4-0+deb8u1fixed
stretch (security), stretch4.8.5+shim4.10.2+xsa282-1+deb9u11fixed
buster4.11.1+26-g87f51bf366-3fixed
sid4.11.1+92-g6c33308a8d-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensource(unstable)4.11.1-1high
xensourcejessie(not affected)
xensourcestretch(not affected)

Notes

[stretch] - xen <not-affected> (Only affects 4.9 and later)
[jessie] - xen <not-affected> (Only affects 4.9 and later)
https://xenbits.xen.org/xsa/advisory-278.txt

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