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AlmaLinux OS 9 must mount /dev/shm with the nosuid option.

An XCCDF Rule

Description

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access.

ID
SV-269316r1050198_rule
Version
ALMA-09-026750
Severity
Medium
References
Updated

Remediation Templates

A Manual Procedure

Modify "/etc/fstab" to use the "nosuid" option on the "/dev/shm" file system.