Re: [PATCH v2] x86/ima: require signed kernel modules

On Thu, 2019-03-07 at 14:27 -0800, Matthew Garrett wrote:

On Wed, Feb 13, 2019 at 4:18 AM Mimi Zohar [off-list ref] wrote:

quoted

-       if (IS_ENABLED(CONFIG_IMA_ARCH_POLICY) && arch_ima_get_secureboot())
+       if (IS_ENABLED(CONFIG_IMA_ARCH_POLICY) && arch_ima_get_secureboot()) {
+               if (IS_ENABLED(CONFIG_MODULE_SIG))
+                       set_module_sig_enforced();
                return sb_arch_rules;

Linus previously pushed back on having the lockdown features
automatically enabled on secure boot systems. Why are we doing the
same in IMA?

IMA-appraisal is extending the "secure boot" concept to the running
system.

Mimi