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 the /boot/efi directory.

DISA Rule

SV-257862r1184295_rule

Vulnerability Number

V-257862

Group Title

SRG-OS-000368-GPOS-00154

Rule Version

RHEL-09-231105

Severity

CAT II

CCI(s)

• CCI-001764 - Prevent program execution in accordance with organization-defined policies, rules of behavior, and/or access agreements regarding software program usage and restrictions; rules authorizing the terms and conditions of software program usage.

Weight

10

Fix Recommendation

Modify "/etc/fstab" to use the "nosuid" option on the "/boot/efi" directory.

Check Contents

Note: For systems that use BIOS, this is not applicable.

Verify the /boot/efi directory is mounted with the "nosuid" option with the following command:

$ mount | grep '\s/boot/efi\s'

/dev/sda1 on /boot/efi type vfat (rw,nosuid,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=winnt,errors=remount-ro)

If the /boot/efi file system does not have the "nosuid" option set, this is a finding.

Note: This control is not applicable to vfat file systems.

Vulnerability Number

V-257862

Documentable

False

Rule Version

RHEL-09-231105

Severity Override Guidance

Note: For systems that use BIOS, this is not applicable.

Verify the /boot/efi directory is mounted with the "nosuid" option with the following command:

$ mount | grep '\s/boot/efi\s'

/dev/sda1 on /boot/efi type vfat (rw,nosuid,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=winnt,errors=remount-ro)

If the /boot/efi file system does not have the "nosuid" option set, this is a finding.

Note: This control is not applicable to vfat file systems.

Check Content Reference

M

Target Key

5551