RHEL 5 : kvm (RHSA-2015:0869)

Medium Nessus Plugin ID 83027


The remote Red Hat host is missing one or more security updates.


Updated kvm packages that fix two security issues are now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel.

It was found that KVM's Write to Model Specific Register (WRMSR) instruction emulation would write non-canonical values passed in by the guest to certain MSRs in the host's context. A privileged guest user could use this flaw to crash the host. (CVE-2014-3610)

A race condition flaw was found in the way the Linux kernel's KVM subsystem handled PIT (Programmable Interval Timer) emulation. A guest user who has access to the PIT I/O ports could use this flaw to crash the host. (CVE-2014-3611)

Red Hat would like to thank Lars Bull of Google and Nadav Amit for reporting the CVE-2014-3610 issue, and Lars Bull of Google for reporting the CVE-2014-3611 issue.

All kvm users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. Note: The procedure in the Solution section must be performed before this update will take effect.


Update the affected packages.

See Also




Plugin Details

Severity: Medium

ID: 83027

File Name: redhat-RHSA-2015-0869.nasl

Version: $Revision: 1.4 $

Type: local

Agent: unix

Published: 2015/04/23

Modified: 2017/10/30

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.9

Temporal Score: 4.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kmod-kvm, p-cpe:/a:redhat:enterprise_linux:kmod-kvm-debug, p-cpe:/a:redhat:enterprise_linux:kvm, p-cpe:/a:redhat:enterprise_linux:kvm-debuginfo, p-cpe:/a:redhat:enterprise_linux:kvm-qemu-img, p-cpe:/a:redhat:enterprise_linux:kvm-tools, cpe:/o:redhat:enterprise_linux:5

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/04/22

Reference Information

CVE: CVE-2014-3610, CVE-2014-3611

BID: 70742, 70743

OSVDB: 113729, 113823

RHSA: 2015:0869