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Red Hat Virtualization 4 RHSA-2021-3942-01: Openvswitch2.11 Use-After-Free

red hat
Calendar Grey October 20, 2021
Dist Redhat Esm H88
Canonical issues a significant alert for snapd 2.52, addressing a severe buffer overflow flaw in container management.
An update for openvswitch2.11 is now available for Red Hat Virtualization 4 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/2974891

Summary

Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic.
Security Fix(es):
* openvswitch2.11: openvswitch: use-after-free in decode_NXAST_RAW_ENCAP during the decoding of a RAW_ENCAP action (CVE-2021-36980)
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.

Topics%20covered

Topics Covered

security advisory network security Red Hat moderate severity virtualization use-after-free openvswitch

References

https://access.redhat.com/security/cve/CVE-2021-36980 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts:
Source: openvswitch2.11-2.11.3-89.el7fdp.src.rpm
ppc64le: openvswitch2.11-2.11.3-89.el7fdp.ppc64le.rpm openvswitch2.11-debuginfo-2.11.3-89.el7fdp.ppc64le.rpm openvswitch2.11-devel-2.11.3-89.el7fdp.ppc64le.rpm python-openvswitch2.11-2.11.3-89.el7fdp.ppc64le.rpm
x86_64: openvswitch2.11-2.11.3-89.el7fdp.x86_64.rpm openvswitch2.11-debuginfo-2.11.3-89.el7fdp.x86_64.rpm openvswitch2.11-devel-2.11.3-89.el7fdp.x86_64.rpm python-openvswitch2.11-2.11.3-89.el7fdp.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Advisory ID: RHSA-2021:3942-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3942
Issue date: 2021-10-20

Topic

An update for openvswitch2.11 is now available for Red Hat Virtualization 4for 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 network security Red Hat moderate severity virtualization use-after-free openvswitch

Relevant Releases Architectures

Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts - ppc64le, x86_64

Bugs Fixed

1984473 - CVE-2021-36980 openvswitch: use-after-free in decode_NXAST_RAW_ENCAP during the decoding of a RAW_ENCAP action

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