STIGQter: STIG Summary: Oracle Linux 9 Security Technical Implementation Guide Version: 1 Release: 6 Benchmark Date: 01 Jul 2026:

OL 9 must be configured so that successful/unsuccessful uses of the umount system call generate an audit record.

DISA Rule

SV-271594r1208724_rule

Vulnerability Number

V-271594

Group Title

SRG-OS-000037-GPOS-00015

Rule Version

OL09-00-000840

Severity

CAT II

CCI(s)

• CCI-000130 - Ensure that audit records containing information that establishes what type of event occurred.
• CCI-000169 - Provide audit record generation capability for the event types the system is capable of auditing as defined in AU-2 a. on organization-defined information system components.
• CCI-002884 - Log organization-defined audit events for nonlocal maintenance and diagnostic sessions.
• CCI-000172 - Generate audit records for the event types defined in AU-2 c that include the audit record content defined in AU-3.

Weight

10

Fix Recommendation

Configure the audit system to generate an audit event for any successful/unsuccessful use of the umount system call by adding or updating the following rules in "/etc/audit/audit.rules" and adding the following rules to "/etc/audit/rules.d/perm_mod.rules" or updating the existing rules in files in the "/etc/audit/rules.d/" directory:

-a always,exit -F arch=b32 -S umount -F auid>=1000 -F auid!=unset -k perm_mod
-a always,exit -F arch=b64 -S umount -F auid>=1000 -F auid!=unset -k perm_mod

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

Restart auditd:
$ sudo service auditd restart

Check Contents

Verify OL 9 is configured to audit the execution of the "umount" command with the following command:

$ sudo auditctl -l | grep umount
-a always,exit -F arch=b32 -S umount -F auid>=1000 -F auid!=-1 -F key=privileged-umount

If the command does not return an audit rule for "umount" or any of the lines returned are commented out, this is a finding.

Vulnerability Number

V-271594

Documentable

False

Rule Version

OL09-00-000840

Severity Override Guidance

Verify OL 9 is configured to audit the execution of the "umount" command with the following command:

$ sudo auditctl -l | grep umount
-a always,exit -F arch=b32 -S umount -F auid>=1000 -F auid!=-1 -F key=privileged-umount

If the command does not return an audit rule for "umount" or any of the lines returned are commented out, this is a finding.

Check Content Reference

M

Target Key

5680