[USN-5065-1] Open vSwitch vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Wed Sep 8 13:15:01 UTC 2021

Ubuntu Security Notice USN-5065-1
September 08, 2021

openvswitch vulnerability

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

- Ubuntu 21.04
- Ubuntu 20.04 LTS


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

Software Description:
- openvswitch: Ethernet virtual switch


It was discovered that Open vSwitch incorrectly handled decoding RAW_ENCAP
actions. A remote attacker could use this issue to cause Open vSwitch to
crash, resulting in a denial of service, or possibly execute arbitrary

Update instructions:

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

Ubuntu 21.04:
  openvswitch-common              2.15.0-0ubuntu3.1

Ubuntu 20.04 LTS:
  openvswitch-common              2.13.3-0ubuntu0.20.04.2

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


Package Information:

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