STIGQter: STIG Summary: Red Hat Enterprise Linux 9 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

RHEL 9 must disable the ability of a user to accidentally press Ctrl-Alt-Del and cause a system to shut down or reboot.

DISA Rule

SV-258031r1134920_rule

Vulnerability Number

V-258031

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

RHEL-09-271105

Severity

CAT II

CCI(s)

CCI-000366 - Implement the security configuration settings.

Weight

Fix Recommendation

Configure RHEL 9 to ignore the Ctrl-Alt-Del sequence in the GNOME desktop.

Run the following command to set the media-keys logout setting:

$ gsettings set org.gnome.settings-daemon.plugins.media-keys logout "['']"

Run the following command to update the database:

$ sudo dconf update

Check Contents

Verify RHEL 9 is configured to ignore the Ctrl-Alt-Del sequence in the GNOME desktop with the following command:

Note: This requirement assumes the use of the RHEL 9 default graphical user interface, the GNOME desktop environment. If the system does not have any graphical user interface installed, this requirement is not applicable.

$ gsettings get org.gnome.settings-daemon.plugins.media-keys logout

['']

If the GNOME desktop is configured to shut down when Ctrl-Alt-Del is pressed, this is a finding.

Vulnerability Number

V-258031

Documentable

False

Rule Version

RHEL-09-271105

Severity Override Guidance

Check Content Reference

Target Key

5551