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Ubuntu Security Notice USN-5698-2
October 25, 2022

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

- Ubuntu 16.04 ESM

Summary:

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

Software Description:
- openvswitch: Ethernet virtual switch

Details:

USN-5698-1 fixed a vulnerability in Open. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

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

Update instructions:

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

Ubuntu 16.04 ESM:
  openvswitch-common              2.5.9-0ubuntu0.16.04.3+esm1

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

References:
  https://ubuntu.com/security/notices/USN-5698-2
  https://ubuntu.com/security/notices/USN-5698-1
  CVE-2022-32166