[USN-4729-1] Open vSwitch vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Wed Feb 10 16:21:57 UTC 2021

Ubuntu Security Notice USN-4729-1
February 10, 2021

openvswitch vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS


Open vSwitch could be made to crash or perform unexpectedly if it received
specially crafted network traffic.

Software Description:
- openvswitch: Ethernet virtual switch


Joakim Hindersson discovered that Open vSwitch incorrectly parsed certain
network packets. A remote attacker could use this issue to cause a denial
of service, or possibly alter packet classification.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.10:
  openvswitch-common              2.13.1-0ubuntu1.3

Ubuntu 20.04 LTS:
  openvswitch-common              2.13.1-0ubuntu0.20.04.4

Ubuntu 18.04 LTS:
  openvswitch-common              2.9.8-0ubuntu0.18.04.2

Ubuntu 16.04 LTS:
  openvswitch-common              2.5.9-0ubuntu0.16.04.3

In general, a standard system update will make all the necessary changes.


Package Information:

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