6.5 - RHSA-2019:3179

Problem Description:

An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 and Red Hat Virtualization Engine 4.3.

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:

RHV-M 4.3 - x86_64 Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts - ppc64le, x86_64

3. Description:

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

Security Fix(es):

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

* 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.

Bug Fix(es):

* ccid: Fix incorrect dwProtocol advertisement of T=0 (BZ#1729880)

* QEMU gets stuck on resume/cont call from libvirt (BZ#1741937)

* [v2v] Migration performance regression (BZ#1743322)

* qemu, qemu-img fail to detect alignment with XFS and Gluster/XFS on 4k block device (BZ#1745443)

* qemu-kvm: backport cpuidle-haltpoll support (BZ#1746282)

* qemu aborts in blockCommit: qemu-kvm: block.c:3486 (BZ#1750322)

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/2974891

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/):

1712670 - CVE-2019-12155 QEMU: qxl: null pointer dereference while releasing spice resources 1729880 - ccid: Fix incorrect dwProtocol advertisement of T=0 [rhel-7.7.z] 1734745 - CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly 1743322 - [v2v] Migration performance regression [rhel-7.7.z] 1745443 - qemu, qemu-img fail to detect alignment with XFS and Gluster/XFS on 4k block device [rhel-7.7.z] 1746282 - qemu-kvm: backport cpuidle-haltpoll support [rhel-7.7.z] 1750322 - qemu aborts in blockCommit: qemu-kvm: block.c:3486 [rhel-7.7.z]