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

RHEL 9 must prevent files with the setuid and setgid bit set from being executed on file systems that are imported via Network File System (NFS).

DISA Rule

SV-257856r1044938_rule

Vulnerability Number

V-257856

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

RHEL-09-231075

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Update each NFS mounted file system to use the "nosuid" option on file systems that are being imported via NFS.

Check Contents

Note: If no NFS mounts are configured, this requirement is Not Applicable.

Verify RHEL 9 has the "nosuid" option configured for all NFS mounts with the following command:

$ grep nfs /etc/fstab

192.168.22.2:/mnt/export /data nfs4 rw,nosuid,nodev,noexec,sync,soft,sec=krb5:krb5i:krb5p

If the system is mounting file systems via NFS and the "nosuid" option is missing, this is a finding.

Vulnerability Number

V-257856

Documentable

False

Rule Version

RHEL-09-231075

Severity Override Guidance

Note: If no NFS mounts are configured, this requirement is Not Applicable.

Verify RHEL 9 has the "nosuid" option configured for all NFS mounts with the following command:

$ grep nfs /etc/fstab

192.168.22.2:/mnt/export /data nfs4 rw,nosuid,nodev,noexec,sync,soft,sec=krb5:krb5i:krb5p

If the system is mounting file systems via NFS and the "nosuid" option is missing, this is a finding.

Check Content Reference

M

Target Key

5551