VMware NSX Data Center for vSphere 6.4.14 | 20 OCT 2022 | Build 20609341

Check for additions and updates to these release notes.

What's New

VMware NSX Data Center for vSphere 6.4.14 fixes a number of customer bugs and addresses a security vulnerability documented in VMSA-2022-0027. Updated XStream to version 1.4.19 to resolve CVE-2021-39144.

  • This security vulnerability impacts NSX for vSphere in both VCF and non-VCF environments.

  • The security fix applies to the NSX Manager only, however an upgrade to 6.4.14 involves a full upgrade, as the release contains other component fixes.

See the NSX Data Center for vSphere 6.4.13 Release Notes for upgrade and installation details and current known issues.

Resolved Issues

  • Fixed Issue 2989776: VMkernel logs filled up by, “Cannot add Arp VMI, reached max limit of 1.”

    Due to duplicate MAC issue, VMware ESXi log file (/var/log/vmkernel.log) is rapidly filled up by excessive messages indicating max ARP limit had been reached.  Resolution: NSX for vSphere 6.4.14 has reduced the default log level for this message from Error to Debug.

  • Fixed Issue 3003814: NSX Manager unresponsive until reboot.

    Unavailability of NSX Manager.

  • Fixed Issue 3020991: Multiple ESX hosts PSOD with large number of pending ARP entries across DRs.

    When workloads generate larger number of TCP/UDP traffic for non-existent IPs (typically by a scanner tool), DRs initiate ARPs to those IPs. DRs couldn't complete processing these large ARPs resulting in ESX watchdog process to PSOD the host.

Document Revision History

Revision Date



October 20, 2022

First Edition

October 25, 2022

Second Edition

Added advisory VMSA-2022-0027

October 28, 2022

Third Edition

Updated What's New section

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