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Red Hat 7 Advisory RHSA-2014:1669-02 Low Severity Qemu-Kvm Issue

red hat
Calendar Grey October 20, 2014
Dist Redhat Esm H88
New qemu-kvm updates released for Red Hat Linux 7 fixing minor security vulnerability along with various bug corrections.
Updated qemu-kvm packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 7

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258

Summary

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the user-space component for running virtual machines using KVM.
An information leak flaw was found in the way QEMU's VGA emulator accessed frame buffer memory for high resolution displays. A privileged guest user could use this flaw to leak memory contents of the host to the guest by setting the display to use a high resolution in the guest. (CVE-2014-3615)
This issue was discovered by Laszlo Ersek of Red Hat.
This update also fixes the following bug:
* This update fixes a regression in the scsi_block_new_request() function, which caused all read requests to through SG_IO if the host cache was not used. (BZ#1141189)
All qemu-kvm users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.

Topics%20covered

Topics Covered

security advisory Red Hat information leak bug fix low severity virtualization qemu-kvm

References

https://access.redhat.com/security/cve/CVE-2014-3615 https://access.redhat.com/security/updates/classification/#low

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: qemu-kvm-1.5.3-60.el7_0.10.src.rpm
x86_64: libcacard-1.5.3-60.el7_0.10.i686.rpm libcacard-1.5.3-60.el7_0.10.x86_64.rpm qemu-guest-agent-1.5.3-60.el7_0.10.x86_64.rpm qemu-img-1.5.3-60.el7_0.10.x86_64.rpm qemu-kvm-1.5.3-60.el7_0.10.x86_64.rpm qemu-kvm-common-1.5.3-60.el7_0.10.x86_64.rpm qemu-kvm-debuginfo-1.5.3-60.el7_0.10.i686.rpm qemu-kvm-debuginfo-1.5.3-60.el7_0.10.x86_64.rpm qemu-kvm-tools-1.5.3-60.el7_0.10.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: libcacard-devel-1.5.3-60.el7_0.10.i686.rpm libcacard-devel-1.5.3-60.el7_0.10.x86_64.rpm libcacard-tools-1.5.3-60.el7_0.10.x86_64.rpm qemu-guest-agent-1.5.3-60.el7_0.10.x86_64.rpm qemu-kvm-debuginfo-1.5.3-60.el7_0.10.i686.rpm qemu-kvm-debuginfo-1.5.3-60.el7_0.10.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: qemu-kvm-1.5.3-60.el7_0.10.src.rpm
x86_64: qemu-guest-agent-1.5.3-60.el7_0.10.x86_64.rpm qemu-kvm-debuginfo-1.5.3-60.el7_0.10.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: libcacard-1.5.3-60.el7_0.10.i686.rpm libcacard-1.5.3-60.el7_0.10.x86_64.rpm libcacard-devel-1.5.3-60.el7_0.10.i686.rpm libcacard-devel-1.5.3-60.el7_0.10.x86_64.rpm libcacard-tools-1.5.3-60.el7_0.10.x86_64.rpm

Read the Full Advisory


Severity
low
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2014:1669-02
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2014:1669.html
Issue date: 2014-10-20

Topic

Updated qemu-kvm packages that fix one security issue and one bug are nowavailable for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having Low securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory Red Hat information leak bug fix low severity virtualization qemu-kvm

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1139115 - CVE-2014-3615 Qemu: information leakage when guest sets high resolution

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