CVE-2014-3690

MEDIUM

Description

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.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d974baa398f34393db76be45f7d4d04fbdbb4a0a

http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00035.html

http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html

http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html

http://rhn.redhat.com/errata/RHSA-2015-0290.html

http://rhn.redhat.com/errata/RHSA-2015-0782.html

http://rhn.redhat.com/errata/RHSA-2015-0864.html

http://secunia.com/advisories/60174

http://www.debian.org/security/2014/dsa-3060

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.2

http://www.mandriva.com/security/advisories?name=MDVSA-2015:058

http://www.openwall.com/lists/oss-security/2014/10/21/4

http://www.openwall.com/lists/oss-security/2014/10/29/7

http://www.securityfocus.com/bid/70691

http://www.ubuntu.com/usn/USN-2417-1

http://www.ubuntu.com/usn/USN-2418-1

http://www.ubuntu.com/usn/USN-2419-1

http://www.ubuntu.com/usn/USN-2420-1

http://www.ubuntu.com/usn/USN-2421-1

https://bugzilla.redhat.com/show_bug.cgi?id=1153322

https://github.com/torvalds/linux/commit/d974baa398f34393db76be45f7d4d04fbdbb4a0a

Details

Source: MITRE

Published: 2014-11-10

Updated: 2018-01-05

Type: CWE-399

Risk Information

CVSS v2.0

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM