Low: libvirt security, bug fix, and enhancement update

Topic

An update for libvirt is now available for Red Hat Enterprise Linux 9.

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

The following packages have been upgraded to a later upstream version: libvirt (8.5.0). (BZ#2060313)

Security Fix(es):

• libvirt: missing locking in nwfilterConnectNumOfNWFilters can lead to denial of service (CVE-2022-0897)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.1 Release Notes linked from the References section.

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.

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64
• Red Hat CodeReady Linux Builder for x86_64 9 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 9 aarch64
• Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x

Fixes

• BZ - 1475431 - migration/postcopy: Handle network failures (libvirt)
• BZ - 1653327 - libvirt: Implement virtio-iommu support for aarch64
• BZ - 1745868 - Remove the support for 'virtio-input-host-pci-{non-}transitional model
• BZ - 1866400 - RFE: provide API which allows to take memory snapshot in sync with storage when storage is outsourced (e.g. using vhost-user-blk)
• BZ - 1901394 - --tls-destination doesn't take effect for disk migration
• BZ - 1910856 - Disk pool changed to be inactive after restarting libvirtd
• BZ - 1999372 - Error unclear when starting guest with wrong virtiofsd path
• BZ - 2026765 - Can't define a TFTP server without a DHCP server in network configuration
• BZ - 2035163 - Starting guest with spice audio backend should fail when SPICE graphics is disabled in QEMU
• BZ - 2036300 - video heads can be configured for 'bochs_display' even max_outputs is not supported
• BZ - 2037146 - Better to report error when setting acpi index='0' in device
• BZ - 2038045 - Documentation about using virt-admin to manage other daemons should be added
• BZ - 2040548 - 'unassigned' address type changed after hotplug
• BZ - 2040555 - Pinning iothread to not allowed cpuset fails but vm xml got updated unexpectedly
• BZ - 2041665 - guestinfo returns wrong value when domain's filesystems are frozen
• BZ - 2045953 - 'virsh nodedev-list --cap storage' doesn't list host nvme storage
• BZ - 2045959 - Not update Documentation for systemd config file
• BZ - 2046024 - virsh domsetlaunchsecstate not report an error message when the input parameter is not enough
• BZ - 2051451 - qemu driver must not use hardcoded "/machine/unattached/device[0]" QOM path when probing cpu flags
• BZ - 2057067 - `virsh blockjob --abort' logs error when cancelling a copy job started with '--reuse-external --shallow', where the target image has a backing file
• BZ - 2057768 - [RFE]Support copy/paste in the VNC console in libvirt
• BZ - 2060313 - Rebase libvirt for RHEL 9.1
• BZ - 2060776 - missing 'nvram-template' when start ovmf guest [rhel-9.1.0]
• BZ - 2063883 - CVE-2022-0897 libvirt: missing locking in nwfilterConnectNumOfNWFilters can lead to denial of service
• BZ - 2064115 - Start encrypted tpm guest failed
• BZ - 2065381 - Libvirt multiqueue support for vDPA [rhel-9.1.0]
• BZ - 2065399 - virtnwfilterd modular daemon occasionally hangs on concurrent access [rhel-9.1.0]
• BZ - 2070380 - Start a guest with numatune restrictive mode has different behavior with virsh numatune cmd.
• BZ - 2073867 - Missing the doc of dirtyrate.calc_mode and dirtyrate.vcpu.<num>.megabytes_per_second
• BZ - 2073887 - Segmentation fault when listening specified event types
• BZ - 2075383 - The vlan tag setting does not work in the <interface type='direct'> xml
• BZ - 2075464 - There is error log when restart virtqemud during vm is running
• BZ - 2075765 - [cgroup] Libvirt cannot operate vm control groups after restarting virtqemud
• BZ - 2075837 - virtnwfilterd crashed when start->reload->restart virtnwfilterd with running guest having filter setting
• BZ - 2078274 - Blockcopy failed with catchXMLError
• BZ - 2081981 - input element with non-virtio bus should fail to accept the model attribute
• BZ - 2082540 - Update device to update the rss setting report success but no changes in xml
• BZ - 2089431 - [RFE] RFE to allow enabling ZEROCOPY live migration through libvirt
• BZ - 2092833 - [RFE] Support vDPA live migration in libvirt
• BZ - 2092856 - Hotplug interface fail with null file descriptor
• BZ - 2095260 - Revert the patch to ignore KVM_CAP_MAX_VCPUS in libvirt
• BZ - 2102009 - Attach interface fail will cause unexpected behavior
• BZ - 2103119 - [RFE] Expose supported TPM version in domCapabilities (via 'swtpm')
• BZ - 2103524 - Run virsh dumpxml cmd with extra options should return error
• BZ - 2105231 - [MT2910] XML error: Invalid value for attribute 'speed' in element 'link': '(null)'.
• BZ - 2107424 - "mem lock limit" of qemu process is not restored when kill src virtqemud during zerocopy migration.
• BZ - 2107892 - Migrate parameters are not restored if kill virtproxyd/virtqemud during migration
• BZ - 2111070 - --postcopy-bandwidth is not hornored when recovering postcopy migration
• BZ - 2112348 - pass the OPENSSL_CONF env var through to the "ssh" binary
• BZ - 2121141 - [libvirt] Kernel does not provide mount namespace
• BZ - 2121441 - NVME disk hot-plug fails due to the denial from selinux

CVEs

• CVE-2022-0897

References

• https://access.redhat.com/security/updates/classification/#low
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.1_release_notes/index