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

RHEL 9 must enable a user session lock until that user re-establishes access using established identification and authentication procedures for graphical user sessions.

DISA Rule

SV-258021r1015088_rule

Vulnerability Number

V-258021

Group Title

SRG-OS-000028-GPOS-00009

Rule Version

RHEL-09-271055

Severity

CAT II

CCI(s)

CCI-000056 - Retain the device lock until the user reestablishes access using established identification and authentication procedures.
CCI-000057 - The information system initiates a session lock after the organization-defined time period of inactivity.

Weight

Fix Recommendation

Configure RHEL 9 to enable a user's session lock until that user re-establishes access using established identification and authentication procedures.

Create a database to contain the system-wide screensaver settings (if it does not already exist) with the following example:

$ sudo vi /etc/dconf/db/local.d/00-screensaver

Edit the "[org/gnome/desktop/screensaver]" section of the database file and add or update the following lines:

# Set this to true to lock the screen when the screensaver activates
lock-enabled=true

Update the system databases:

$ sudo dconf update

Check Contents

Verify RHEL 9 enables a user's session lock until that user re-establishes access using established identification and authentication procedures with the following command:

Note: This requirement assumes the use of the RHEL 9 default graphical user interface, the GNOME desktop environment. If the system does not have any graphical user interface installed, this requirement is Not Applicable.

$ gsettings get org.gnome.desktop.screensaver lock-enabled

true

If the setting is "false", this is a finding.

Vulnerability Number

V-258021

Documentable

False

Rule Version

RHEL-09-271055

Severity Override Guidance

Check Content Reference

Target Key

5551