RHEL 9 must periodically flush audit records to disk to prevent the loss of audit records.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258168 | RHEL-09-653095 | SV-258168r958428_rule | CCI-000154 | medium |
| Description | ||||
| If option "freq" is not set to a value that requires audit records being written to disk after a threshold number is reached, then audit records may be lost. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2025-05-14 | |||
Details
Check Text (C-258168r958428_chk)
Verify that audit system is configured to flush to disk after every 100 records with the following command:
$ sudo grep freq /etc/audit/auditd.conf
freq = 100
If "freq" isn't set to a value between "1" and "100", the value is missing, or the line is commented out, this is a finding.
Fix Text (F-61833r943023_fix)
Configure RHEL 9 to flush audit to disk by adding or updating the following rule in "/etc/audit/auditd.conf":
freq = 100
The audit daemon must be restarted for the changes to take effect.