A qemu-kvm security, bug fix, and enhancement update has been released for Red Hat Enterprise Linux 7.

RHSA-2020:3906-01: Low: qemu-kvm security, bug fix, and enhancement update

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Red Hat Security Advisory

Synopsis: Low: qemu-kvm security, bug fix, and enhancement update
Advisory ID: RHSA-2020:3906-01
Product: Red Hat Enterprise Linux
Advisory URL:   https://access.redhat.com/errata/RHSA-2020:3906
Issue date: 2020-09-29
CVE Names: CVE-2018-15746 CVE-2019-20382
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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 Low. 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):

* QEMU: seccomp: blacklist is not applied to all threads (CVE-2018-15746)

* QEMU: vnc: memory leakage upon disconnect (CVE-2019-20382)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.9 Release Notes linked from the References section.

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/):

1615637 - CVE-2018-15746 QEMU: seccomp: blacklist is not applied to all threads
1791679 - QEMU: Slirp: disable emulation of tcp programs like ftp IRC etc. [rhel-7]
1802215 - Add support for newer glusterfs
1810390 - CVE-2019-20382 QEMU: vnc: memory leakage upon disconnect

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
qemu-kvm-1.5.3-175.el7.src.rpm

x86_64:
qemu-img-1.5.3-175.el7.x86_64.rpm
qemu-kvm-1.5.3-175.el7.x86_64.rpm
qemu-kvm-common-1.5.3-175.el7.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-175.el7.x86_64.rpm
qemu-kvm-tools-1.5.3-175.el7.x86_64.rpm

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

Source:
qemu-kvm-1.5.3-175.el7.src.rpm

x86_64:
qemu-img-1.5.3-175.el7.x86_64.rpm
qemu-kvm-1.5.3-175.el7.x86_64.rpm
qemu-kvm-common-1.5.3-175.el7.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-175.el7.x86_64.rpm
qemu-kvm-tools-1.5.3-175.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
qemu-kvm-1.5.3-175.el7.src.rpm

x86_64:
qemu-img-1.5.3-175.el7.x86_64.rpm
qemu-kvm-1.5.3-175.el7.x86_64.rpm
qemu-kvm-common-1.5.3-175.el7.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-175.el7.x86_64.rpm
qemu-kvm-tools-1.5.3-175.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
qemu-kvm-1.5.3-175.el7.src.rpm

x86_64:
qemu-img-1.5.3-175.el7.x86_64.rpm
qemu-kvm-1.5.3-175.el7.x86_64.rpm
qemu-kvm-common-1.5.3-175.el7.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-175.el7.x86_64.rpm
qemu-kvm-tools-1.5.3-175.el7.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-2018-15746
  https://access.redhat.com/security/cve/CVE-2019-20382
  https://access.redhat.com/security/updates/classification/#low
  https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.9_release_notes/index

8. Contact:

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

Copyright 2020 Red Hat, Inc.