Moderate: virt:av and virt-devel:av security and bug fix update

Topic

An update for the virt:av and virt-devel:av modules is now available for Red Hat Enterprise Linux Advanced Virtualization 8.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

Description

The Advanced Virtualization module provides the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

Security Fixes:

• QEMU: virtiofsd: potential privilege escalation via CVE-2018-13405 (CVE-2022-0358)
• libnbd: nbdcopy: missing error handling may create corrupted destination image (CVE-2022-0485)

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:

• KVM Fedora 35 guest x86 programs randomly crash in signal handler [rhel-av-8.4z] (BZ#2043121)

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

Affected Products

• Red Hat Enterprise Linux Advanced Virtualization EUS 8.4 x86_64
• Red Hat Enterprise Linux Advanced Virtualization (for RHEL Server for IBM Power LE) EUS 8.4 ppc64le
• Red Hat Enterprise Linux Advanced Virtualization (for RHEL Server for IBM System Z) EUS 8.4 s390x

Fixes

• BZ - 2043121 - KVM Fedora 35 guest x86 programs randomly crash in signal handler [rhel-av-8.4z]
• BZ - 2044863 - CVE-2022-0358 QEMU: virtiofsd: potential privilege escalation via CVE-2018-13405
• BZ - 2050324 - CVE-2022-0485 libnbd: nbdcopy: missing error handling may create corrupted destination image

CVEs

• CVE-2022-0358
• CVE-2022-0485

References

• https://access.redhat.com/security/updates/classification/#moderate