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Red Hat 7 RHSA-2021-3943-01 Moderate Security: RHV-H Handle Fix

red hat
Calendar Grey October 20, 2021
Dist Redhat Esm H88
The recent Red Hat Virtualization 4 patch improves safeguards against vulnerabilities in the management of virtual machines. Keep your systems safe!
An update for redhat-release-virtualization-host and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7

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

Summary

The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.
Security Fix(es):
* kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)
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):
* Red Hat Virtualization Host has been rebased on Red Hat Enterprise Linux 7.9 Batch #9. (BZ#2010171)

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat virtualization RHV-H

References

https://access.redhat.com/security/cve/CVE-2021-22543 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Virtualization 4 Hypervisor for RHEL 7:
Source: redhat-virtualization-host-4.3.19-20211013.0.el7_9.src.rpm
noarch: redhat-virtualization-host-image-update-4.3.19-20211013.0.el7_9.noarch.rpm
RHEL 7-based RHEV-H for RHEV 4 (build requirements):
Source: redhat-release-virtualization-host-4.3.19-1.el7ev.src.rpm redhat-virtualization-host-4.3.19-20211013.0.el7_9.src.rpm
noarch: redhat-virtualization-host-image-update-4.3.19-20211013.0.el7_9.noarch.rpm redhat-virtualization-host-image-update-placeholder-4.3.19-1.el7ev.noarch.rpm
x86_64: redhat-release-virtualization-host-4.3.19-1.el7ev.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


Advisory ID: RHSA-2021:3943-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3943
Issue date: 2021-10-20

Topic

An update for redhat-release-virtualization-host andredhat-virtualization-host is now available for Red Hat Virtualization 4for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. 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.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat virtualization RHV-H

Relevant Releases Architectures

RHEL 7-based RHEV-H for RHEV 4 (build requirements) - noarch, x86_64

Red Hat Virtualization 4 Hypervisor for RHEL 7 - noarch

Bugs Fixed

1965461 - CVE-2021-22543 kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks

2010171 - Rebase RHV-H on RHEL 7.9 Batch 9

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