The kdump service on AlmaLinux OS 9 must be disabled.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-269278	SRG-OS-000480-GPOS-00227	ALMA-09-022350	SV-269278r1050160_rule	2025-02-20	1

Description
Kernel core dumps may contain the full contents of system memory at the time of the crash. Kernel core dumps consume a considerable amount of disk space and may result in denial of service by exhausting the available space on the target file system partition. Unless the system is used for kernel development or testing, there is little need to run the kdump service.

ℹ️ Check
Verify that the kdump service is disabled in system boot configuration with the following command: $ systemctl is-enabled kdump masked Verify that the kdump service is not active (i.e., not running) through current runtime configuration with the following command: $ systemctl is-active kdump inactive Verify that the kdump service is masked with the following command: $ systemctl show kdump \| grep "LoadState\\|UnitFileState" LoadState=masked UnitFileState=masked If the "kdump" service is loaded or active, and is not masked, this is a finding.

ℹ️ Check

Verify that the kdump service is disabled in system boot configuration with the following command: $ systemctl is-enabled kdump masked Verify that the kdump service is not active (i.e., not running) through current runtime configuration with the following command: $ systemctl is-active kdump inactive Verify that the kdump service is masked with the following command: $ systemctl show kdump | grep "LoadState\|UnitFileState" LoadState=masked UnitFileState=masked If the "kdump" service is loaded or active, and is not masked, this is a finding.

✔️ Fix
Disable the kdump service with the following command: $ systemctl mask --now kdump