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 conceal, via the session lock, information previously visible on the display with a publicly viewable image.

DISA Rule

SV-269104r1049986_rule

Vulnerability Number

V-269104

Group Title

SRG-OS-000031-GPOS-00012

Rule Version

ALMA-09-001230

Severity

CAT II

CCI(s)

CCI-000060 - Conceal, via the device lock, information previously visible on the display with a publicly viewable image.

Weight

Fix Recommendation

Configure AlmaLinux OS 9 to prevent a user from overriding the picture-uri setting for graphical user interfaces.

First, in the file "/etc/dconf/db/local.d/00-security-settings" add or update the following lines:

[org/gnome/desktop/screensaver]
picture-uri=''

Then, prevent user modification by adding the following line to "/etc/dconf/db/local.d/locks/00-security-settings-lock":

/org/gnome/desktop/screensaver/picture-uri

Update the dconf system databases:

$ dconf update

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Note: This requirement assumes the use of the AlmaLinux OS 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.

To ensure the screensaver is configured to be blank, run the following command:

$ gsettings get org.gnome.desktop.screensaver picture-uri

If properly configured, the output should be "''".

To ensure that users cannot set the screensaver background, run the following:

$ grep picture-uri /etc/dconf/db/local.d/locks/*

If properly configured, the output should be "/org/gnome/desktop/screensaver/picture-uri".

If it is not set or configured properly, this is a finding.

Vulnerability Number

V-269104

Documentable

False

Rule Version

ALMA-09-001230

Severity Override Guidance

Check Content Reference

Target Key

5664