GrapheneOS is the continuation of CopperheadOS

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

diff --git a/kconfig-hardened-check.py b/kconfig-hardened-check.py
index 3b9a254941ad35f0c51b308840e11d2d9e38cf35..923402bf6e62cc6714b71bf616445412337d5cd5 100755 (executable)
--- a/kconfig-hardened-check.py
+++ b/kconfig-hardened-check.py
@@ -236,7 +236,7 @@ def construct_checklist(checklist, arch):
                         OptCheck('DEBUG_SET_MODULE_RONX',    'y', 'defconfig', 'self_protection'), \
                         modules_not_set)) # DEBUG_SET_MODULE_RONX was before v4.11
     checklist.append(OptCheck('GCC_PLUGINS',                 'y', 'defconfig', 'self_protection'))
-    checklist.append(OR(OptCheck('REFCOUNT_FULL',               '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)
@@ -264,7 +264,6 @@ def construct_checklist(checklist, arch):
         checklist.append(OptCheck('RANDOMIZE_BASE',              'y', 'defconfig', 'self_protection'))
         checklist.append(OptCheck('THREAD_INFO_IN_TASK',         'y', 'defconfig', 'self_protection'))
     if arch == 'ARM':
-        checklist.append(OptCheck('VMSPLIT_3G',                  'y', 'defconfig', 'self_protection'))
         checklist.append(OptCheck('CPU_SW_DOMAIN_PAN',           'y', 'defconfig', 'self_protection'))
         checklist.append(OptCheck('STACKPROTECTOR_PER_TASK',     'y', 'defconfig', 'self_protection'))
     if arch == 'ARM64' or arch == 'ARM':
@@ -311,6 +310,7 @@ def construct_checklist(checklist, arch):
     if arch == 'X86_64' or arch == 'X86_32':
         checklist.append(OptCheck('DEFAULT_MMAP_MIN_ADDR',            '65536', 'kspp', 'self_protection'))
     if arch == 'X86_32':
+        checklist.append(OptCheck('PAGE_TABLE_ISOLATION',             'y', 'kspp', 'self_protection'))
         checklist.append(OptCheck('HIGHMEM64G',                       'y', 'kspp', 'self_protection'))
         checklist.append(OptCheck('X86_PAE',                          'y', 'kspp', 'self_protection'))
     if arch == 'ARM64':
@@ -332,14 +332,15 @@ def construct_checklist(checklist, arch):
                              iommu_support_is_set))
         checklist.append(AND(OptCheck('INTEL_IOMMU_DEFAULT_ON',            'y', 'clipos', 'self_protection'), \
                              iommu_support_is_set))
+    if arch == 'X86_32':
+        checklist.append(AND(OptCheck('INTEL_IOMMU',                       'y', 'clipos', 'self_protection'), \
+                             iommu_support_is_set))
 
     checklist.append(OptCheck('SLUB_DEBUG_ON',                      'y', 'my', 'self_protection'))
     checklist.append(OptCheck('RESET_ATTACK_MITIGATION',            'y', 'my', 'self_protection')) # needs userspace support (systemd)
     if arch == 'X86_64':
         checklist.append(AND(OptCheck('AMD_IOMMU_V2',                   'y', 'my', 'self_protection'), \
                              iommu_support_is_set))
-    if arch == 'X86_32':
-        checklist.append(OptCheck('PAGE_TABLE_ISOLATION',               'y', 'my', 'self_protection'))
 
     if arch == 'X86_64' or arch == 'ARM64' or arch == 'X86_32':
         checklist.append(OptCheck('SECURITY',                               'y', 'defconfig', 'security_policy')) # and choose your favourite LSM
@@ -425,6 +426,8 @@ def construct_checklist(checklist, arch):
     checklist.append(AND(OptCheck('LDISC_AUTOLOAD',           'is not set', 'clipos', 'cut_attack_surface'), \
                          VerCheck((5, 1)))) # LDISC_AUTOLOAD can be disabled since v5.1
 
+    checklist.append(OptCheck('AIO',                  'is not set', 'grapheneos', 'cut_attack_surface'))
+
     checklist.append(OptCheck('MMIOTRACE',            'is not set', 'my', 'cut_attack_surface')) # refers to LOCKDOWN (permissive)
     checklist.append(OptCheck('LIVEPATCH',            'is not set', 'my', 'cut_attack_surface'))
     checklist.append(OptCheck('IP_DCCP',              'is not set', 'my', 'cut_attack_surface'))
@@ -436,6 +439,8 @@ def construct_checklist(checklist, arch):
     checklist.append(OptCheck('INTEGRITY',       'y', 'defconfig', 'userspace_hardening'))
     if arch == 'ARM64':
         checklist.append(OptCheck('ARM64_PTR_AUTH',       'y', 'defconfig', 'userspace_hardening'))
+    if arch == 'ARM' or  arch == 'X86_32':
+        checklist.append(OptCheck('VMSPLIT_3G',           'y', 'defconfig', 'userspace_hardening'))
     if arch == 'X86_64' or arch == 'ARM64':
         checklist.append(OptCheck('ARCH_MMAP_RND_BITS',   '32', 'clipos', 'userspace_hardening'))
     if arch == 'X86_32' or arch == 'ARM':