OL 9 must remove all software components after updated versions have been installed.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| low | V-271522 | SRG-OS-000437-GPOS-00194 | OL09-00-000495 | SV-271522r1091278_rule | 2026-02-17 | 1 |
Description
Previous versions of software components that are not removed from the information system after updates have been installed may be exploited by some adversaries.
ℹ️ Check
Verify that OL 9 removes all software components after updated versions have been installed with the following command:
$ grep clean /etc/dnf/dnf.conf
clean_requirements_on_remove=True
If clean_requirements_on_remove is not set to "True", this is a finding.
✔️ Fix
Configure OL 9 to remove all software components after updated versions have been installed.
Edit the file /etc/dnf/dnf.conf by adding or editing the following line:
clean_requirements_on_remove=1