dmesg Hardening for Administrator Privileges

UEK 8U1 is built with the SECURITY_DMESG_RESTRICT flag enabled. Administrator privileges are now required to run the dmesg command when a system is running UEK 8U1.

This update hardens the system against unrestricted access to sensitive information about the system. Use the sudo command to gain administrator privileges when running dmesg.

If you urgently need to disable this restriction, you can run sudo sysctl kernel.dmesg_restrict=0 to temporarily disable the restriction. Or you can add the configuration entry in a system configuration file in the /etc/sysctl.d/ directory:

echo "kernel.dmesg_restrict = 0" | sudo tee /etc/sysctl.d/dmesg-restrict
sudo sysctl --system

Consider the security risk of disabling this restriction before doing so, and evaluate whether it might be better to resolve this requirement in another way.