STIGQter: STIG Summary: Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide Version: 1 Release: 7 Benchmark Date: 01 Jul 2026:

The systemd Ctrl-Alt-Delete burst key sequence in AlmaLinux OS 9 must be disabled.

DISA Rule

SV-269140r1050022_rule

Vulnerability Number

V-269140

Group Title

SRG-OS-000324-GPOS-00125

Rule Version

ALMA-09-006620

Severity

CAT I

CCI(s)

• CCI-002235 - Prevent non-privileged users from executing privileged functions.

Weight

10

Fix Recommendation

Configure the system to disable the CtrlAltDelBurstAction by added or modifying the following line in the "/etc/systemd/system.conf" configuration file:

CtrlAltDelBurstAction=none

Reload the daemon for this change to take effect.

$ systemctl daemon-reexec

Check Contents

Verify AlmaLinux OS 9 is configured to not reboot the system when Ctrl-Alt-Delete is pressed seven times within two seconds with the following command:

$ systemd-analyze cat-config systemd/system.conf | grep -v '#' | grep CtrlAltDel

CtrlAltDelBurstAction=none

If "CtrlAltDelBurstAction" is not set to "none", is commented out, or is missing, this is a finding.

Vulnerability Number

V-269140

Documentable

False

Rule Version

ALMA-09-006620

Severity Override Guidance

Verify AlmaLinux OS 9 is configured to not reboot the system when Ctrl-Alt-Delete is pressed seven times within two seconds with the following command:

$ systemd-analyze cat-config systemd/system.conf | grep -v '#' | grep CtrlAltDel

CtrlAltDelBurstAction=none

If "CtrlAltDelBurstAction" is not set to "none", is commented out, or is missing, this is a finding.

Check Content Reference

M

Target Key

5664