OL 9 must disable the kernel.core_pattern.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-271728 | OL09-00-002380 | SV-271728r1091896_rule | Medium |
| Description |
| A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could contain sensitive data and is generally useful only for developers trying to debug problems. |
| STIG | Date |
| Oracle Linux 9 Security Technical Implementation Guide | 2025-05-08 |
Details
| Check Text (C-75778r1091894_chk) |
| Verify that OL 9 disables storing core dumps with the following commands: $ sysctl kernel.core_pattern kernel.core_pattern = |/bin/false If the returned line does not have a value of "|/bin/false", or a line is not returned and the need for core dumps is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding. |
| Fix Text (F-75685r1091895_fix) |
| Configure OL 9 to disable storing core dumps. Add or edit the following line in a system configuration file, in the "/etc/sysctl.d/" directory: kernel.core_pattern = |/bin/false The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command: $ sudo sysctl --system |