STIGQter: STIG Summary: Red Hat Enterprise Linux 9 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

RHEL 9 must disable the Stream Control Transmission Protocol (SCTP) kernel module.

DISA Rule

SV-257807r1044862_rule

Vulnerability Number

V-257807

Group Title

SRG-OS-000095-GPOS-00049

Rule Version

RHEL-09-213060

Severity

CAT II

CCI(s)

• CCI-000381 - Configure the system to provide only organization-defined mission essential capabilities.

Weight

10

Fix Recommendation

To configure the system to prevent the sctp kernel module from being loaded, add the following lines to the file /etc/modprobe.d/sctp.conf (or create sctp.conf if it does not exist):

install sctp /bin/false
blacklist sctp

Check Contents

Verify that RHEL 9 disables the ability to load the sctp kernel module with the following command:

$ grep -r sctp /etc/modprobe.conf /etc/modprobe.d/*

install sctp /bin/false
blacklist sctp

If the command does not return any output, or the lines are commented out, and use of sctp is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Vulnerability Number

V-257807

Documentable

False

Rule Version

RHEL-09-213060

Severity Override Guidance

Verify that RHEL 9 disables the ability to load the sctp kernel module with the following command:

$ grep -r sctp /etc/modprobe.conf /etc/modprobe.d/*

install sctp /bin/false
blacklist sctp

If the command does not return any output, or the lines are commented out, and use of sctp is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Check Content Reference

M

Target Key

5551