What is CVE-2014-3646?

CVE-2014-3646 is a medium-severity vulnerability in Linux Kernel. CVSS score: 5.5/10. Published 2014-11-10.

How severe is CVE-2014-3646?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2014-3646 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linux Kernel

CVE-2014-3646

arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel through 3.17.2 does not have an exit handler for the INVVPID instruction, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.

Published 2014-11-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Linux Kernel
Canonical Ubuntu Linux — versions 12.04
Debian Linux — versions 7.0
openSUSE Evergreen — versions 11.4
Red Hat Enterprise Linux — versions 5.0
SUSE Linux Enterprise Server — versions 11

Public proof-of-concept exploits

References

www.ubuntu.com/usn/USN-2418-1 (vendor-advisory, Third Party Advisory)
www.ubuntu.com/usn/USN-2417-1 (vendor-advisory, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
www.debian.org/security/2014/dsa-3060 (vendor-advisory, Third Party Advisory)
git.kernel.org/
lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html (vendor-advisory, Mailing List, Third Party Advisory)
lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html (vendor-advisory, Mailing List, Third Party Advisory)
github.com/torvalds/linux/commit/a642fc305053cc1c6e47e4f4df327895747ab485 (Patch, Third Party Advisory)
www.ubuntu.com/usn/USN-2394-1 (vendor-advisory, Third Party Advisory)
rhn.redhat.com/errata/RHSA-2015-0284.html (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2014-3646?: CVE-2014-3646 is a medium-severity vulnerability in Linux Kernel. CVSS score: 5.5/10. Published 2014-11-10.
How severe is CVE-2014-3646?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2014-3646 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.