IOMMU_SUPPORT is needed for all architectures

[kconfig-hardened-check.git] / kconfig-hardened-check.py

diff --git a/kconfig-hardened-check.py b/kconfig-hardened-check.py
index 26fbd302ffb35b0817765a52163d09cb9887c02d..3b9a254941ad35f0c51b308840e11d2d9e38cf35 100755 (executable)
--- a/kconfig-hardened-check.py
+++ b/kconfig-hardened-check.py
@@ -238,14 +238,14 @@ def construct_checklist(checklist, arch):
     checklist.append(OptCheck('GCC_PLUGINS',                 'y', 'defconfig', 'self_protection'))
     checklist.append(OR(OptCheck('REFCOUNT_FULL',               'y', 'defconfig', 'self_protection'), \
                         VerCheck((5, 5)))) # REFCOUNT_FULL is enabled by default since v5.5
+    iommu_support_is_set = OptCheck('IOMMU_SUPPORT',         'y', 'defconfig', 'self_protection') # is needed for mitigating DMA attacks
+    checklist.append(iommu_support_is_set)
     if arch == 'X86_64' or arch == 'X86_32':
         checklist.append(OptCheck('MICROCODE',                   'y', 'defconfig', 'self_protection')) # is needed for mitigating CPU bugs
         checklist.append(OptCheck('RETPOLINE',                   'y', 'defconfig', 'self_protection'))
         checklist.append(OptCheck('X86_SMAP',                    'y', 'defconfig', 'self_protection'))
         checklist.append(OR(OptCheck('X86_UMIP',                 'y', 'defconfig', 'self_protection'), \
                             OptCheck('X86_INTEL_UMIP',           'y', 'defconfig', 'self_protection')))
-        iommu_support_is_set = OptCheck('IOMMU_SUPPORT',         'y', 'defconfig', 'self_protection') # is needed for mitigating DMA attacks
-        checklist.append(iommu_support_is_set)
         checklist.append(OptCheck('SYN_COOKIES',                 'y', 'defconfig', 'self_protection')) # another reason?
     if arch == 'X86_64':
         checklist.append(OptCheck('PAGE_TABLE_ISOLATION',        'y', 'defconfig', 'self_protection'))
@@ -325,7 +325,7 @@ def construct_checklist(checklist, arch):
     checklist.append(OptCheck('SLAB_MERGE_DEFAULT',                    'is not set', 'clipos', 'self_protection')) # slab_nomerge
     checklist.append(AND(OptCheck('GCC_PLUGIN_RANDSTRUCT_PERFORMANCE', 'is not set', 'clipos', 'self_protection'), \
                          randstruct_is_set))
-    checklist.append(OptCheck('CONFIG_RANDOM_TRUST_BOOTLOADER',        'is not set', 'clipos', 'self_protection'))
+    checklist.append(OptCheck('RANDOM_TRUST_BOOTLOADER',               'is not set', 'clipos', 'self_protection'))
     checklist.append(OptCheck('RANDOM_TRUST_CPU',                      'is not set', 'clipos', 'self_protection'))
     if arch == 'X86_64' or arch == 'X86_32':
         checklist.append(AND(OptCheck('INTEL_IOMMU_SVM',                   'y', 'clipos', 'self_protection'), \
@@ -346,6 +346,8 @@ def construct_checklist(checklist, arch):
     if arch == 'ARM':
         checklist.append(OptCheck('SECURITY',                               'y', 'kspp', 'security_policy')) # and choose your favourite LSM
     checklist.append(OptCheck('SECURITY_YAMA',                          'y', 'kspp', 'security_policy'))
+    checklist.append(OR(OptCheck('SECURITY_WRITABLE_HOOKS',             'is not set', 'my', 'security_policy'), \
+                        OptCheck('SECURITY_SELINUX_DISABLE',            'is not set', 'kspp', 'security_policy')))
     checklist.append(OptCheck('SECURITY_LOCKDOWN_LSM',                  'y', 'clipos', 'security_policy'))
     checklist.append(OptCheck('SECURITY_LOCKDOWN_LSM_EARLY',            'y', 'clipos', 'security_policy'))
     checklist.append(OptCheck('LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY', 'y', 'clipos', 'security_policy'))
@@ -354,7 +356,6 @@ def construct_checklist(checklist, arch):
     checklist.append(AND(OptCheck('SECURITY_LOADPIN_ENFORCE',           'y', 'my', 'security_policy'), \
                          loadpin_is_set))
     checklist.append(OptCheck('SECURITY_SAFESETID',                     'y', 'my', 'security_policy'))
-    checklist.append(OptCheck('SECURITY_WRITABLE_HOOKS',                'is not set', 'my', 'security_policy'))
 
     checklist.append(OptCheck('SECCOMP',              'y', 'defconfig', 'cut_attack_surface'))
     checklist.append(OptCheck('SECCOMP_FILTER',       'y', 'defconfig', 'cut_attack_surface'))
@@ -420,6 +421,7 @@ def construct_checklist(checklist, arch):
     checklist.append(OptCheck('KEXEC_FILE',               'is not set', 'clipos', 'cut_attack_surface')) # refers to LOCKDOWN (permissive)
     checklist.append(OptCheck('USER_NS',                  'is not set', 'clipos', 'cut_attack_surface')) # user.max_user_namespaces=0
     checklist.append(OptCheck('X86_MSR',                  'is not set', 'clipos', 'cut_attack_surface')) # refers to LOCKDOWN
+    checklist.append(OptCheck('X86_CPUID',                'is not set', 'clipos', 'cut_attack_surface'))
     checklist.append(AND(OptCheck('LDISC_AUTOLOAD',           'is not set', 'clipos', 'cut_attack_surface'), \
                          VerCheck((5, 1)))) # LDISC_AUTOLOAD can be disabled since v5.1