RHEL 10 must implement address space layout randomization (ASLR) to protect its memory from unauthorized code execution.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-281315 | RHEL-10-701130 | SV-281315r1167095_rule | CCI-002824 | medium |
| Description | ||||
| ASLR makes it more difficult for an attacker to predict the location of attack code they have introduced into a process's address space during an attempt at exploitation. Additionally, ASLR makes it more difficult for an attacker to know the location of existing code to repurpose it using return-oriented programming techniques. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Details
Check Text (C-281315r1167095_chk)
Verify RHEL 10 is implementing ASLR.
Check the status of the "kernel.randomize_va_space" kernel parameter with the following command:
$ sudo sysctl kernel.randomize_va_space
kernel.randomize_va_space = 2
If "kernel.randomize_va_space" is not set to "2" or is missing, this is a finding.
Fix Text (F-85781r1167094_fix)
Configure RHEL 10 to implement ASLR.
Create the drop-in if it does not already exist:
$ sudo vi /etc/sysctl.d/99-kernel_randomize_va_space.conf
Add the following line to the file:
kernel.randomize_va_space = 2
Reload settings from all system configuration files with the following command:
$ sudo sysctl --system