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Red Hat: RHSA-2020-5040-01 Moderate: Libvirt Double Free Issue

red hat
Calendar Grey November 10, 2020
Dist Redhat Esm H88
A significant patch issued for Ubuntu's OpenStack, addressing vital vulnerabilities and improving functionalities. Learn more now!
An update for libvirt is now available 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/11258

After installing the updated packages, libvirtd will be restarted automatically.

Summary

The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems.
Security Fix(es):
* libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.c (CVE-2020-25637)
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):
* libvirt destroying macvtap device of running VM after a failed incoming migration of another VM with same macvtap "target device" (BZ#1868549)

Topics%20covered

Topics Covered

security advisory moderate Red Hat bug fix security impact libvirt CVE-2020-25637

References

https://access.redhat.com/security/cve/CVE-2020-25637 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: libvirt-4.5.0-36.el7_9.3.src.rpm
x86_64: libvirt-4.5.0-36.el7_9.3.x86_64.rpm libvirt-bash-completion-4.5.0-36.el7_9.3.x86_64.rpm libvirt-client-4.5.0-36.el7_9.3.i686.rpm libvirt-client-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-config-network-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-config-nwfilter-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-interface-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-lxc-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-network-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-nodedev-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-nwfilter-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-qemu-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-secret-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-storage-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-storage-core-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-storage-disk-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-storage-gluster-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-storage-iscsi-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-storage-logical-4.5.0-36.el7_9.3.x86_64.rpm libvirt-daemon-driver-storage-mpath-4.5.0-36.el7_9.3.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:5040-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5040
Issue date: 2020-11-10

Topic

An update for libvirt is now available for 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 Red Hat bug fix security impact libvirt CVE-2020-25637

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1881037 - CVE-2020-25637 libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.c

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