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Red Hat Security Advisory 2020-0366-01

Red Hat Security Advisory 2020-0366-01
Posted Feb 5, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-0366-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow, kernel
systems | linux, redhat
advisories | CVE-2019-11135, CVE-2019-14378
SHA-256 | 5314db8d5b4027b9ffd78348452ce53792e5d0ad186dc12d43dd568bffb5542a

Red Hat Security Advisory 2020-0366-01

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=====================================================================
Red Hat Security Advisory

Synopsis: Important: qemu-kvm security, bug fix, and enhancement update
Advisory ID: RHSA-2020:0366-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0366
Issue date: 2020-02-04
CVE Names: CVE-2019-11135 CVE-2019-14378
=====================================================================

1. Summary:

An update for qemu-kvm is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

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

3. Description:

Kernel-based Virtual Machine (KVM) is a full virtualization solution for
Linux on a variety of architectures. The qemu-kvm packages provide the
user-space component for running virtual machines that use KVM.

Security Fix(es):

* hw: TSX Transaction Asynchronous Abort (TAA) (CVE-2019-11135)

* QEMU: slirp: heap buffer overflow during packet reassembly
(CVE-2019-14378)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

Bug Fix(es):

* [Intel 7.8 Bug] [KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not enabled
in VM qemu-kvm (BZ#1730606)

Enhancement(s):

* [Intel 7.8 FEAT] MDS_NO exposure to guest - qemu-kvm (BZ#1755333)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

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.

5. Bugs fixed (https://bugzilla.redhat.com/):

1734745 - CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly
1753062 - CVE-2019-11135 hw: TSX Transaction Asynchronous Abort (TAA)

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
qemu-kvm-1.5.3-167.el7_7.4.src.rpm

x86_64:
qemu-img-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-common-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-tools-1.5.3-167.el7_7.4.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

Source:
qemu-kvm-1.5.3-167.el7_7.4.src.rpm

x86_64:
qemu-img-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-common-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-tools-1.5.3-167.el7_7.4.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
qemu-kvm-1.5.3-167.el7_7.4.src.rpm

x86_64:
qemu-img-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-common-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-tools-1.5.3-167.el7_7.4.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
qemu-kvm-1.5.3-167.el7_7.4.src.rpm

x86_64:
qemu-img-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-common-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-167.el7_7.4.x86_64.rpm
qemu-kvm-tools-1.5.3-167.el7_7.4.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2019-11135
https://access.redhat.com/security/cve/CVE-2019-14378
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/solutions/tsx-asynchronousabort

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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