RHEL 10 must generate audit records for successful and unsuccessful uses of the "umount2" system call.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-281153 | RHEL-10-500670 | SV-281153r1166411_rule | CCI-000130 | medium |
| Description | ||||
| The changing of file permissions could indicate that a user is attempting to gain access to information that would otherwise be disallowed. Auditing discretionary access control (DAC) modifications can facilitate the identification of patterns of abuse among both authorized and unauthorized users. Satisfies: SRG-OS-000037-GPOS-00015, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215 | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Details
Check Text (C-281153r1166411_chk)
Verify RHEL 10 generates an audit record for all uses of the "umount2" system call with the following command:
$ sudo auditctl -l | grep umount2
-a always,exit -F arch=b64 -S umount2 -F auid>=1000 -F auid!=-1 -F key=privileged-umount
-a always,exit -F arch=b32 -S umount2 -F auid>=1000 -F auid!=-1 -F key=privileged-umount
If no line is returned, this is a finding.
Fix Text (F-85619r1166410_fix)
Configure RHEL 10 to generate audit records upon successful and unsuccessful uses of the "umount2" system call by adding or updating the following rules in a file in "/etc/audit/rules.d":
-a always,exit -F arch=b32 -S umount2 -F auid>=1000 -F auid!=unset -k privileged-umount
-a always,exit -F arch=b64 -S umount2 -F auid>=1000 -F auid!=unset -k privileged-umount
Restart the audit daemon with the following command for the changes to take effect:
$ sudo service auditd restart