CVE-2014-3690

moderate-risk
Published 2014-11-10

arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 3.17.2 on Intel processors does not ensure that the value in the CR4 control register remains the same after a VM entry, which allows host OS users to kill arbitrary processes or cause a denial of service (system disruption) by leveraging /dev/kvm access, as demonstrated by PR_SET_TSC prctl calls within a modified copy of QEMU.

Do I need to act?

-
0.04% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (13)

Affected Vendors

Debian Canonical Redhat Opensuse Novell Suse Linux

References (44)

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=...
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00035.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2015-0290.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2015-0782.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2015-0864.html
Broken Link http://secunia.com/advisories/60174
Third Party Advisory http://www.debian.org/security/2014/dsa-3060
Mailing List http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.2
Broken Link http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
Mailing List http://www.openwall.com/lists/oss-security/2014/10/21/4
Mailing List http://www.openwall.com/lists/oss-security/2014/10/29/7
Third Party Advisory http://www.securityfocus.com/bid/70691
Third Party Advisory http://www.ubuntu.com/usn/USN-2417-1
Third Party Advisory http://www.ubuntu.com/usn/USN-2418-1
Third Party Advisory http://www.ubuntu.com/usn/USN-2419-1
Third Party Advisory http://www.ubuntu.com/usn/USN-2420-1
Third Party Advisory http://www.ubuntu.com/usn/USN-2421-1
and 24 more references
35
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 17/34 · Moderate