RHEL-09-211050 - The x86 Ctrl-Alt-Delete key sequence must be disabled on RHEL 9.

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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 OS 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.

Satisfies: SRG-OS-000324-GPOS-00125, SRG-OS-000480-GPOS-00227


Configure RHEL 9 to disable the ctrl-alt-del.target with the following command:

$ sudo systemctl disable --now ctrl-alt-del.target
$ sudo systemctl mask --now ctrl-alt-del.target

See Also


Item Details

References: CAT|I, CCI|CCI-000366, CCI|CCI-002235, Rule-ID|SV-257785r925342_rule, STIG-ID|RHEL-09-211050, Vuln-ID|V-257785

Plugin: Unix

Control ID: 2022d526a1812ce83f1299c3b4938357c663999aad685fae2c9db58d7bc06623