DISA STIGS Viewer

AlmaLinux OS 9 must take appropriate action when the internal event queue is full.

Overview

Finding ID Version Rule ID IA Controls Severity
V-269511 ALMA-09-052380 SV-269511r1050394_rule   Medium
Description
The audit system should have an action setup in the event the internal event queue becomes full so that no data is lost.
STIG Date
CloudLinux AlmaLinux OS 9 Security Technical Implementation Guide 2025-05-22

Details

Check Text (C-73542r1049892_chk)
Verify that AlmaLinux OS 9 audit system is configured to take an appropriate action when the internal event queue is full:

$ grep -i overflow_action /etc/audit/auditd.conf

overflow_action = SYSLOG

If the value of the "overflow_action" option is not set to "SYSLOG", "SINGLE", "HALT" or the line is commented out, ask the system administrator (SA) to indicate how the audit logs are offloaded to a different system or media.

If there is no evidence that the transfer of the audit logs being offloaded to another system or media takes appropriate action if the internal event queue becomes full, this is a finding.
Fix Text (F-73443r1048910_fix)
Edit the /etc/audit/auditd.conf file and add or update the "overflow_action" option:

overflow_action = SYSLOG

The audit daemon must be restarted for changes to take effect.