RHSA-2021:0931: Important: openvswitch2.11 and ovn2.11 security update

Published Mar 18, 2021
·
Updated

Open vSwitch provides standard network bridging functions and support forthe OpenFlow protocol for remote per-flow control of traffic.OVN, the Open Virtual Network, is a system to support virtual networkabstraction. OVN complements the existing capabilities of OVS to add native support for virtual network abstractions, such as virtual L2 and L3 overlays and security groups.Security Fix(es): buffer overflow in the lldpdecode function in daemon/protocols/lldp.c (CVE-2015-8011) librtevhost Integer overflow in vhostusersetlogbase() (CVE-2020-10722) librtevhost Integer truncation in vhostusercheckandallocqueuepair() (CVE-2020-10723) librtevhost Missing inputs validation in Vhost-crypto (CVE-2020-10724) For more details about the security issue(s), including the impact, a CVSSscore, acknowledgments, and other related information, refer to the CVEpage listed in the References section.

Affected Software

11 affected componentsFixes available
redhat/openvswitch-selinux-extra-policy<1.0-17.el7fd
1.0-17.el7fd
redhat/openvswitch2.11<2.11.3-77.el7fd
2.11.3-77.el7fd
redhat/ovn2.11<2.11.1-57.el7fd
2.11.1-57.el7fd
redhat/openvswitch2.11-debuginfo<2.11.3-77.el7fd
2.11.3-77.el7fd
redhat/openvswitch2.11-devel<2.11.3-77.el7fd
2.11.3-77.el7fd
redhat/openvswitch2.11-test<2.11.3-77.el7fd
2.11.3-77.el7fd
redhat/ovn2.11-central<2.11.1-57.el7fd
2.11.1-57.el7fd
redhat/ovn2.11-debuginfo<2.11.1-57.el7fd
2.11.1-57.el7fd
redhat/ovn2.11-host<2.11.1-57.el7fd
2.11.1-57.el7fd
redhat/ovn2.11-vtep<2.11.1-57.el7fd
2.11.1-57.el7fd
redhat/python-openvswitch2.11<2.11.3-77.el7fd
2.11.3-77.el7fd

Remediation

Event History

Mar 18, 2021
Advisory Published
via Red Hat·12:00 AM
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of RHSA-2021:0931?

The severity of RHSA-2021:0931 is considered important due to potential security implications.

2

How do I fix RHSA-2021:0931?

To fix RHSA-2021:0931, upgrade to the patched versions listed in the advisory, specifically openvswitch-selinux-extra-policy, openvswitch2.11, and ovn2.11.

3

Which packages are affected by RHSA-2021:0931?

RHSA-2021:0931 affects several packages including openvswitch2.11, ovn2.11, and their associated debug and development packages.

4

Is there a workaround for RHSA-2021:0931?

A workaround for RHSA-2021:0931 may involve configuring firewall rules or applying specific SELinux policies, but applying patches is recommended.

5

When was RHSA-2021:0931 released?

RHSA-2021:0931 was released as part of Red Hat's security advisories in 2021.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203