Moderate: Red Hat OpenStack Platform 16.1 (openstack-neutron) security update

Topic

An update for openstack-neutron is now available for Red Hat OpenStack
Platform 16.1 (Train).

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

OpenStack Networking (neutron) is a virtual network service for OpenStack.
Just as OpenStack Compute (nova) provides an API to dynamically request and
configure virtual servers, OpenStack Networking provides an API to
dynamically request and configure virtual networks. These networks connect
'interfaces' from other OpenStack services (e.g. virtual NICs from Compute
VMs). The OpenStack Networking API supports extensions to provide advanced
network capabilities (e.g. QoS, ACLs, network monitoring, etc.)

Security Fix(es):

• Routes middleware memory leak for nonexistent controllers

(CVE-2021-40797)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page listed in 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

Affected Products

• Red Hat OpenStack 16.1 x86_64
• Red Hat OpenStack for IBM Power 16.1 ppc64le

Fixes

• BZ - 1963903 - [16.1] Port delete during instance deletion fails due to foreign key constraint
• BZ - 1993130 - Security group wrongly created twice
• BZ - 1993688 - neutron port list slow when trunk service plugin is enabled
• BZ - 1997610 - "Port ... updated" messages in openvswitch-agent logs appear as duplicates
• BZ - 1999125 - deadlock error in neutron log about connection to MariaDB During network stack create
• BZ - 2001626 - new line symbol in opt_name of extra_dhcp_opt causes dnsmasq to fail
• BZ - 2003248 - CVE-2021-40797 openstack-neutron: Routes middleware memory leak for nonexistent controllers
• BZ - 2026576 - Neutron ovs agent constantly restarting on some compute nodes
• BZ - 2033584 - Update subnet with same gateway_ip as is already used should be allowed
• BZ - 2049807 - "DbQuotaNoLockDriver" fails to delete the expired reservations

CVEs

• CVE-2021-40797

References

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