=========================================================================Ubuntu Security Notice USN-5242-1
January 20, 2022

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

- Ubuntu 21.10

Summary:

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

Software Description:
- openvswitch: Ethernet virtual switch

Details:

It was discovered that Open vSwitch incorrectly handled certain fragmented
packets. A remote attacker could possibly use this issue to cause Open
vSwitch to consume resources, leading to a denial of service.

Update instructions:

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

Ubuntu 21.10:
  openvswitch-common              2.16.0-0ubuntu2.1

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

References:
  
  CVE-2021-3905

Package Information:
  https://launchpad.net/ubuntu/+source/openvswitch/2.16.0-0ubuntu2.1