CVE-2016-4440

NameCVE-2016-4440
Descriptionarch/x86/kvm/vmx.c in the Linux kernel through 4.6.3 mishandles the APICv on/off state, which allows guest OS users to obtain direct APIC MSR access on the host OS, and consequently cause a denial of service (host OS crash) or possibly execute arbitrary code on the host OS, via x2APIC mode.
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
linux (PTS)wheezy3.2.78-1fixed
wheezy (security)3.2.96-3fixed
jessie3.16.51-2fixed
jessie (security)3.16.51-3+deb8u1fixed
stretch4.9.65-3fixed
stretch (security)4.9.65-3+deb9u2fixed
buster, sid4.14.13-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.5.5-1high
linuxsourcejessie(not affected)
linuxsourcewheezy(not affected)

Notes

[jessie] - linux <not-affected> (Introduced in 4.5)
[wheezy] - linux <not-affected> (Introduced in 4.5)
Upstream patch: https://github.com/torvalds/linux/commit/3ce424e45411cf5a13105e0386b6ecf6eeb4f66f
https://bugzilla.redhat.com/show_bug.cgi?id=1337806
http://comments.gmane.org/gmane.comp.emulators.kvm.devel/152100

Search for package or bug name: Reporting problems