STIGQter: STIG Summary: Oracle Linux 9 Security Technical Implementation Guide Version: 1 Release: 6 Benchmark Date: 01 Jul 2026:

OL 9 must disable mounting of cramfs.

DISA Rule

SV-271448r1155297_rule

Vulnerability Number

V-271448

Group Title

SRG-OS-000095-GPOS-00049

Rule Version

OL09-00-000045

Severity

CAT III

CCI(s)

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

Weight

10

Fix Recommendation

Configure OL 9 to prevent the cramfs kernel module from being loaded.

Add the following line to the file /etc/modprobe.d/cramfs.conf (or create blacklist.conf if it does not exist):

install cramfs /bin/false
blacklist cramfs

Reboot the system for the settings to take effect.

Check Contents

Verify OL 9 disables the ability to load the cramfs kernel module with the following command:

$ grep -irs cramfs /etc/modprobe.conf /etc/modprobe.d/*
/etc/modprobe.d/blacklist.conf:install cramfs /bin/false
/etc/modprobe.d/blacklist.conf:blacklist cramfs

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

Vulnerability Number

V-271448

Documentable

False

Rule Version

OL09-00-000045

Severity Override Guidance

Verify OL 9 disables the ability to load the cramfs kernel module with the following command:

$ grep -irs cramfs /etc/modprobe.conf /etc/modprobe.d/*
/etc/modprobe.d/blacklist.conf:install cramfs /bin/false
/etc/modprobe.d/blacklist.conf:blacklist cramfs

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

Check Content Reference

M

Target Key

5680