STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

TOSS 5 must have the tmux package installed.

DISA Rule

SV-282376r1200108_rule

Vulnerability Number

V-282376

Group Title

SRG-OS-000028-GPOS-00009

Rule Version

TOSS-05-000311

Severity

CAT II

CCI(s)

• CCI-000056 - Retain the device lock until the user reestablishes access using established identification and authentication procedures.
• CCI-000057 - The information system initiates a session lock after the organization-defined time period of inactivity.

Weight

10

Fix Recommendation

Install the "tmux" package using the following command:

$ sudo dnf install tmux

Check Contents

Verify TOSS 5 has the "tmux" package installed using the following command:

$ sudo dnf list --installed tmux

Example output:

tmux.x86_64 3.2a-4.el9

If the "tmux" package is not installed, this is a finding.

Vulnerability Number

V-282376

Documentable

False

Rule Version

TOSS-05-000311

Severity Override Guidance

Verify TOSS 5 has the "tmux" package installed using the following command:

$ sudo dnf list --installed tmux

Example output:

tmux.x86_64 3.2a-4.el9

If the "tmux" package is not installed, this is a finding.

Check Content Reference

M

Target Key

5738