STIGQter: STIG Summary: Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide Version: 1 Release: 7 Benchmark Date: 01 Jul 2026:

AlmaLinux OS 9 must restrict usage of ptrace to descendant processes.

DISA Rule

SV-269424r1198253_rule

Vulnerability Number

V-269424

Group Title

SRG-OS-000132-GPOS-00067

Rule Version

ALMA-09-040940

Severity

CAT II

CCI(s)

CCI-001082 - Separate user functionality, including user interface services, from system management functionality.

Weight

Fix Recommendation

Configure AlmaLinux OS 9 to restrict usage of ptrace to with the following command:

$ echo "kernel.yama.ptrace_scope = 1" > /etc/sysctl.d/60-ptrace.conf

Load settings from all system configuration files with the following command:

$ sysctl --system

Check Contents

Verify AlmaLinux OS 9 restricts usage of ptrace to descendant processes (1), admins only (2), or disables ptrace entirely (3) with the following command:

$ sysctl kernel.yama.ptrace_scope

kernel.yama.ptrace_scope = 1

If the returned line has a value of "0" or a line is not returned, this is a finding.

Check that the configuration files are present to enable this kernel parameter.

$ /usr/lib/systemd/systemd-sysctl --cat-config | egrep -v '^(#|;)' | grep -F kernel.yama.ptrace_scope | tail -1

kernel.yama.ptrace_scope = 1

If "kernel.yama.ptrace_scope" is equal to "0" or nothing is returned, this is a finding.

Vulnerability Number

V-269424

Documentable

False

Rule Version

ALMA-09-040940

Severity Override Guidance

Check Content Reference

Target Key

5664