RHEL 10 must disable the "kernel.core_pattern".
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-281311 | RHEL-10-701090 | SV-281311r1167083_rule | CCI-000381 | 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 | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Details
Check Text (C-281311r1167083_chk)
Verify RHEL 10 disables storing core dumps.
Check the status of the "kernel.core_pattern" kernel parameter with the following command:
$ sudo sysctl kernel.core_pattern
kernel.core_pattern = |/bin/false
If "kernel.core_pattern" is not set to "|/bin/false", or a line is not returned and the need for core dumps is not documented with the information system security officer as an operational requirement, this is a finding.
Fix Text (F-85777r1167082_fix)
Configure RHEL 10 to disable storing core dumps.
Create a drop-in if it does not already exist:
$ sudo vi /etc/sysctl.d/99-kernel_core_pattern.conf
Add the following to the file:
kernel.core_pattern = |/bin/false
Reload settings from all system configuration files with the following command:
$ sudo sysctl --system