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Linux RHEL-10-700990

DISA STIG RHEL-10-700990 (CAT II): RHEL 10 must disable virtual system calls.

DISA STIG recommends

RHEL-10-700990 CAT II

RHEL 10 must disable virtual system calls.

NIST SP 800-53: SC-3

Check

Verify RHEL 10 is configured so that the current GRUB 2 configuration disables virtual system calls with the following command: $ sudo grubby --info=ALL | grep args | grep -v 'vsyscall=none' If any output is returned, this is a finding. Check that virtual system calls are disabled by default to persist in kernel updates with the following command: $ sudo grep vsyscall /etc/default/grub GRUB_CMDLINE_LINUX="vsyscall=none" If "vsyscall" is not set to "none", is missing or commented out, and is not documented with the information system security officer as an operational requirement, this is a finding.

Fix

Configure RHEL 10 to disable virtual system calls with the following command: $ sudo grubby --update-kernel=ALL --args="vsyscall=none"

Our decision

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