RedHat: RHSA-2020-2342:01 Important: qemu-kvm-rhev bug fix update
Summary
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):
* CVE-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf()
usages
* CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp
protocols in tcp_emu()
* CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly
This update fixes the following bug:
* BZ 1804577 Backport: Passthrough host CPU microcode version to KVM guest
if using CPU passthrough to RHEL 7.7/7.8 [rhel-7.6.z]
Users of qemu-kvm are advised to upgrade to these updated packages. 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.
Summary
Solution
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/2974891
References
https://access.redhat.com/security/cve/CVE-2019-14378 https://access.redhat.com/security/cve/CVE-2020-7039 https://access.redhat.com/security/cve/CVE-2020-8608 https://access.redhat.com/security/updates/classification/#important
Package List
RHV-M 4.2:
Source:
qemu-kvm-rhev-2.12.0-18.el7_6.11.src.rpm
x86_64:
qemu-img-rhev-2.12.0-18.el7_6.11.x86_64.rpm
qemu-kvm-common-rhev-2.12.0-18.el7_6.11.x86_64.rpm
qemu-kvm-rhev-2.12.0-18.el7_6.11.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.12.0-18.el7_6.11.x86_64.rpm
qemu-kvm-tools-rhev-2.12.0-18.el7_6.11.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/
Topic
An update for qemu-kvm-rhev is now available for Red Hat Virtualization forRed Hat Virtualization Host 7.Red Hat Product Security has rated this update as having a security impactof Low. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
RHV-M 4.2 - x86_64
Bugs Fixed
1734745 - CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly
1791551 - CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()
1798453 - CVE-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf() usages
1804577 - Backport: Passthrough host CPU microcode version to KVM guest if using CPU passthrough to RHEL 7.7/7.8 [rhel-7.6.z]
