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Trellix Application and Change Control 6.6.8 Linux Release Notes

  • Published on Aug 31, 2026
  • 1 minute(s) read
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The Trellix Application and Change Control 6.6.8 Linux release includes new features, resolved issues, and updated kernels and platform support.

Every update release is cumulative and includes all features and fixes from the previous release. We recommend that you always upgrade to the most current update.

Rating

The rating defines the urgency for installing this update.

This release is recommended for all environments. Apply this update at the earliest convenience.

Release details

For release dates and build numbers, see KB87944.

Upgrade support

This release supports upgrading from the following Application Control client versions:

  • 6.4.22–6.4.24

  • 6.5.0–6.5.2

  • 6.6.0–6.6.7

New or changed

IPv6 support—TACC 6.6.8 now supports full IPv6 compatibility, enabling secure communication between agents and servers, accurate policy enforcement for both IPv4 and IPv6 traffic, and enhanced visibility in network logs and the user interface. Additionally, trusted paths can now be defined using IPv6 shared locations, and GTI integration is fully supported in IPv6-based networks.

If your system switches between IPv4 and IPv6 network stacks, the GTI communication channel can be interrupted. If the system is not restarted after the network switch, you must manually restart the scsrvc service to restore GTI connectivity.

Note

The scsrvc service can be restarted only when the product is in Update, Observe, Disable, or Disable* mode.

Libcurl upgrade—This release upgrades the Libcurl version to 8.14.1.

New kernel support—This release supports Ubuntu 24, in addition to the latest versions of the Linux kernel and other platforms:

  • Ubuntu 24

    • 6.8.0-31-generic

    • 6.8.0-51-generic

  • Ubuntu 22

    • 5.15.0-138-generic

    • 5.15.0-139-generic

    • 5.15.0-140-generic

    • 5.15.0-141-generic

    • 6.5.0-14-generic

    • 6.5.0-17-generic

    • 6.5.0-18-generic

    • 6.5.0-21-generic

    • 6.5.0-45-generic

    • 6.5.0-1008-aws

    • 6.8.0-1021-aws

  • Ubuntu 20

    • 5.4.0-215-generic

    • 5.4.0-216-generic

    • 5.15.0-138-generic

    • 5.15.0-139-generic

  • Red Hat Enterprise Linux 10

    • 6.12.0-55.16.1.el10_0.x86_64

    • 6.12.0-55.17.1.el10_0.x86_64

    • 6.12.0-55.18.1.el10_0.x86_64

    • 6.12.0-55.19.1.el10_0.x86_64

    • 6.12.0-55.20.1.el10_0.x86_64

  • Amazon Linux 2

    • 4.14.355-276.618.amzn2.x86_64

    • 4.14.355-276.639.amzn2.x86_64

    • 4.14.355-277.643.amzn2.x86_64

    • 4.14.355-277.647.amzn2.x86_64

    • 5.4.286-201.385.amzn2.x86_64

    • 5.4.288-202.389.amzn2.x86_64

    • 5.4.289-204.398.amzn2.x86_64

    • 5.4.290-205.397.amzn2.x86_64

    • 5.4.290-205.405.amzn2.x86_64

    • 5.4.291-206.400.amzn2.x86_64

    • 5.4.291-207.406.amzn2.x86_64

    • 5.4.292-208.414.amzn2.x86_64

    • 5.4.292-209.416.amzn2.x86_64

    • 5.4.293-211.419.amzn2.x86_64

    • 5.4.294-212.419.amzn2.x86_64

    • 5.10.227-219.884.amzn2.x86_64

    • 5.10.230-223.885.amzn2.x86_64

    • 5.10.233-223.887.amzn2.x86_64

    • 5.10.234-225.895.amzn2.x86_64

    • 5.10.228-219.884.amzn2.x86_64

    • 5.10.233-224.894.amzn2.x86_64

    • 5.10.234-225.910.amzn2.x86_64

    • 5.10.234-225.917.amzn2.x86_64

    • 5.10.234-225.921.amzn2.x86_64

    • 5.10.235-227.919.amzn2.x86_64

    • 5.10.236-227.928.amzn2.x86_64

    • 5.10.236-228.935.amzn2.x86_64

    • 5.10.237-230.948.amzn2.x86_64

    • 5.10.237-230.949.amzn2.x86_64

    • 5.10.238-231.953.amzn2.x86_64

    • 5.15.167-112.166.amzn2.x86_64

    • 5.15.168-114.166.amzn2.x86_64

    • 5.15.173-118.169.amzn2.x86_64

    • 5.15.176-118.170.amzn2.x86_64

    • 5.15.176-118.178.amzn2.x86_64

    • 5.15.178-120.178.amzn2.x86_64

    • 5.15.178-120.180.amzn2.x86_64

    • 5.15.184-125.189.amzn2.x86_64

    • 5.15.185-126.190.amzn2.x86_64

    • 5.15.178-120.187.amzn2.x86_64

    • 5.15.179-121.185.amzn2.x86_64

    • 5.15.179-122.186.amzn2.x86_64

    • 5.15.180-122.191.amzn2.x86_64

    • 5.15.180-123.192.amzn2.x86_64

    • 5.15.182-123.190.amzn2.x86_64

    • 5.15.184-125.189.amzn2.x86_64

    • 5.15.184-125.190.amzn2.x86_64

    • 5.15.185-126.190.amzn2.x86_64

  • Amazon Linux 2023

    • 6.1.129-138.220.amzn2023.x86_64

    • 6.1.130-139.222.amzn2023.x86_64

    • 6.1.131-143.221.amzn2023.x86_64

    • 6.1.132-147.221.amzn2023.x86_64

    • 6.1.134-150.224.amzn2023.x86_64

    • 6.1.134-152.225.amzn2023.x86_64

    • 6.1.140-154.222.amzn2023.x86_64

    • 6.1.141-155.222.amzn2023.x86_64

For the complete list of kernels supported, see Linux kernel support for Application and Change Control 6.x.

Known issues

For a list of current known issues, see Application and Change Control 6.x Known Issues.

Resolved issues

This release resolves known issues.

Category

Reference

Resolution

Fixes to features

MACC-14839

Fixed an issue where the communication channel between the scsrvc and sadmin services can become unstable. An auto-failback mechanism has been implemented to ensure a stable connection.

Performance

MACC-14736

Fixed an issue where the system became unresponsive with high resource utilization on RHEL 9 when TACC and Crowdstrike Falcon were enabled simultaneously.

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