RHSA-2021:2736: Important: Red Hat Virtualization Host security and bug fix update [ovirt-4.4.7]
The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. 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.The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. 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. The ovirt-node-ng packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. 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: sizet-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909) systemd: uncontrolled allocation on the stack in function unitnamepathescape leads to crash (CVE-2021-33910) kernel: use-after-free in net/bluetooth/hcievent.c when destroying an hcichan (CVE-2021-33034) ansible: multiple modules expose secured values (CVE-2021-3447) 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): The redhat-release-virtualization-host package no longer requires vdsm-hooks. In this release, the installation of vdsm-hooks is not mandatory for the Red Hat Virtualization Host. (BZ#1976095) Previously, rhsmcertd was not enabled by default on the Red Hat Virtualization Host. As a result, the systems did not regularly report to RHSM while the subscription-manager reported no obvious issues and repositories were properly enabled. In this release, rhsmcertd is enabled by default in RHVH, and as a result, RHSM now receives reports regularly. (BZ#1958145) In this release, the Red Hat Virtualization Host has been rebased on top of the RHEL 8.4.0 Batch #1 update. For more information, see the RHEL release notes. (BZ#1957242) Red Hat Virtualization Host now includes an updated scap-security-guide-rhv which allows you to apply a PCI DSS security profile to the system during installation, (BZ#1883793)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:2736?
The severity of RHSA-2021:2736 is classified as important.
How do I fix RHSA-2021:2736?
To fix RHSA-2021:2736, upgrade the affected packages to the specified remedial versions as per the advisory.
Which packages are affected by RHSA-2021:2736?
The affected packages include redhat-release-virtualization-host, imgbased, scap-security-guide, and several others.
Are there any specific versions to upgrade for RHSA-2021:2736?
Yes, you should upgrade to versions like 4.4.7-3.el8 for redhat-release-virtualization-host among others listed in the advisory.
Is this vulnerability related to Red Hat Virtualization Hosts?
Yes, RHSA-2021:2736 specifically concerns vulnerabilities in Red Hat Virtualization Host packages.