RHEL 10 must disable the systemd Ctrl-Alt-Delete burst key sequence.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-281298 | RHEL-10-700950 | SV-281298r1166846_rule | CCI-002235 | high |
| Description | ||||
| A locally logged-on user who presses Ctrl-Alt-Delete when at the console can reboot the system. If accidentally pressed, as could happen in the case of a mixed operating system environment, this can create the risk of short-term loss of availability of systems due to unintentional reboot. In a graphical user environment, risk of unintentional reboot from the Ctrl-Alt-Delete sequence is reduced because the user will be prompted before any action is taken. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Details
Check Text (C-281298r1166846_chk)
Verify RHEL 10 is configured to not reboot the system when Ctrl-Alt-Delete is pressed seven times within two seconds with the following command:
$ grep -iR CtrlAltDelBurstAction /etc/systemd/
/etc/systemd/system.conf:CtrlAltDelBurstAction=none
If the "CtrlAltDelBurstAction" is not set to "none", is commented out, or is missing, this is a finding.
Fix Text (F-85764r1166845_fix)
Configure RHEL 10 to disable the "CtrlAltDelBurstAction".
Update the "/etc/systemd/system.conf" configuration file as follows:
$ sudo vi /etc/systemd/system.conf
CtrlAltDelBurstAction=none
Reload the daemon for this change to take effect:
$ sudo systemctl daemon-reload