STIGQter: STIG Summary: IBM z/OS ACF2 Security Technical Implementation Guide Version: 9 Release: 9 Benchmark Date: 01 Jul 2026:

IBM z/OS BUFUSEWARN in the SMFPRMxx must be properly set.

DISA Rule

SV-223549r1225775_rule

Vulnerability Number

V-223549

Group Title

SRG-OS-000046-GPOS-00022

Rule Version

ACF2-OS-000130

Severity

CAT II

CCI(s)

• CCI-000139 - Alert organization-defined personnel or roles within an organization-defined time period in the event of an audit logging process failure.
• CCI-001855 - Provide a warning to organization-defined personnel, roles, and/or locations within an organization-defined time period when allocated audit log storage volume reaches an organization-defined percentage of repository maximum audit log storage capacity.
• CCI-001858 - Provide an alert in an organization-defined real-time-period to organization-defined personnel, roles, and/or locations when organization-defined audit failure events requiring real-time alerts occur.

Weight

10

Fix Recommendation

Configure the BUFUSEWARN statement in SMFPRMxx to 75 (75%) or less.

Check Contents

Refer to IEASYS00 member in SYS1.PARMLIB Concatenation. Determine proper SMFPRMxx member in SYS1.PARMLIB.

If BUFUSEWARN is set for 75 (75%) or less this is not a finding.

Vulnerability Number

V-223549

Documentable

False

Rule Version

ACF2-OS-000130

Severity Override Guidance

Refer to IEASYS00 member in SYS1.PARMLIB Concatenation. Determine proper SMFPRMxx member in SYS1.PARMLIB.

If BUFUSEWARN is set for 75 (75%) or less this is not a finding.

Check Content Reference

M

Target Key

4100