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Red Hat Security Advisory

Synopsis: Important: qemu-kvm security update
Advisory ID: RHSA-2019:2892-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2892
Issue date: 2019-09-24
CVE Names: CVE-2018-10839 CVE-2018-11806 CVE-2018-17962
CVE-2019-6778 CVE-2019-12155
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1. Summary:

An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.

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 Desktop (v. 6) – i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, 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: slirp: heap buffer overflow while reassembling fragmented datagrams
(CVE-2018-11806)

* QEMU: slirp: heap buffer overflow in tcp_emu() (CVE-2019-6778)

* QEMU: ne2000: integer overflow leads to buffer overflow issue
(CVE-2018-10839)

* QEMU: pcnet: integer overflow leads to buffer overflow (CVE-2018-17962)

* QEMU: qxl: null pointer dereference while releasing spice resources
(CVE-2019-12155)

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.

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/):

1581013 – CVE-2018-10839 QEMU: ne2000: integer overflow leads to buffer overflow issue
1586245 – CVE-2018-11806 QEMU: slirp: heap buffer overflow while reassembling fragmented datagrams
1636773 – CVE-2018-17962 QEMU: pcnet: integer overflow leads to buffer overflow
1664205 – CVE-2019-6778 QEMU: slirp: heap buffer overflow in tcp_emu()
1712670 – CVE-2019-12155 QEMU: qxl: null pointer dereference while releasing spice resources

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
qemu-kvm-0.12.1.2-2.506.el6_10.5.src.rpm

i386:
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.i686.rpm

x86_64:
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-img-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.506.el6_10.5.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
qemu-kvm-0.12.1.2-2.506.el6_10.5.src.rpm

x86_64:
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-img-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.506.el6_10.5.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
qemu-kvm-0.12.1.2-2.506.el6_10.5.src.rpm

i386:
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.i686.rpm

ppc64:
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.ppc64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.ppc64.rpm

x86_64:
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-img-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.506.el6_10.5.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
qemu-kvm-0.12.1.2-2.506.el6_10.5.src.rpm

i386:
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.i686.rpm

x86_64:
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-img-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.506.el6_10.5.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-2018-10839
https://access.redhat.com/security/cve/CVE-2018-11806
https://access.redhat.com/security/cve/CVE-2018-17962
https://access.redhat.com/security/cve/CVE-2019-6778
https://access.redhat.com/security/cve/CVE-2019-12155
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2019 Red Hat, Inc.
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