STIGQter STIGQter: STIG Summary: Red Hat Enterprise Linux 9 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

RHEL 9 must enable the hardware random number generator entropy gatherer service.

DISA Rule

SV-257782r991589_rule

Vulnerability Number

V-257782

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

RHEL-09-211035

Severity

CAT III

CCI(s)

Weight

10

Fix Recommendation

Install the rng-tools package with the following command:

$ sudo dnf install rng-tools

Then enable the rngd service run the following command:

$ sudo systemctl enable --now rngd

Check Contents

Note: For RHEL 9 systems running with kernel FIPS mode enabled as specified by RHEL-09-671010, this requirement is Not Applicable.

Verify that RHEL 9 has enabled the hardware random number generator entropy gatherer service with the following command:

$ systemctl is-active rngd

active

If the "rngd" service is not active, this is a finding.

Vulnerability Number

V-257782

Documentable

False

Rule Version

RHEL-09-211035

Severity Override Guidance

Note: For RHEL 9 systems running with kernel FIPS mode enabled as specified by RHEL-09-671010, this requirement is Not Applicable.

Verify that RHEL 9 has enabled the hardware random number generator entropy gatherer service with the following command:

$ systemctl is-active rngd

active

If the "rngd" service is not active, this is a finding.

Check Content Reference

M

Target Key

5551