Fix the SCHED_CORE check: it's now available for ARM64 and ARM

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

diff --git a/kconfig_hardened_check/__init__.py b/kconfig_hardened_check/__init__.py
index 6ccea34b93beb36a8f6375123d06de4ea48b351f..3e503490d50f38991f623ef4f497b34ebc7d30c7 100644 (file)
--- a/kconfig_hardened_check/__init__.py
+++ b/kconfig_hardened_check/__init__.py
@@ -426,6 +426,7 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('self_protection', 'kspp', 'ZERO_CALL_USED_REGS', 'y')]
     l += [KconfigCheck('self_protection', 'kspp', 'HW_RANDOM_TPM', 'y')]
     l += [KconfigCheck('self_protection', 'kspp', 'STATIC_USERMODEHELPER', 'y')] # needs userspace support
+    l += [KconfigCheck('self_protection', 'kspp', 'SCHED_CORE', 'y')]
     randstruct_is_set = OR(KconfigCheck('self_protection', 'kspp', 'RANDSTRUCT_FULL', 'y'),
                            KconfigCheck('self_protection', 'kspp', 'GCC_PLUGIN_RANDSTRUCT', 'y'))
     l += [randstruct_is_set]
@@ -484,43 +485,37 @@ def add_kconfig_checks(l, arch):
                   stackleak_is_set,
                   gcc_plugins_support_is_set)]
         l += [KconfigCheck('self_protection', 'kspp', 'RANDOMIZE_KSTACK_OFFSET_DEFAULT', 'y')]
+    if arch in ('X86_64', 'ARM64'):
+        cfi_clang_is_set = KconfigCheck('self_protection', 'kspp', 'CFI_CLANG', 'y')
+        l += [cfi_clang_is_set]
+        l += [AND(KconfigCheck('self_protection', 'kspp', 'CFI_PERMISSIVE', 'is not set'),
+                  cfi_clang_is_set)]
     if arch in ('X86_64', 'X86_32'):
-        l += [KconfigCheck('self_protection', 'kspp', 'SCHED_CORE', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'DEFAULT_MMAP_MIN_ADDR', '65536')]
+        l += [AND(KconfigCheck('self_protection', 'kspp', 'INTEL_IOMMU_DEFAULT_ON', 'y'),
+                  iommu_support_is_set)]
     if arch in ('ARM64', 'ARM'):
         l += [KconfigCheck('self_protection', 'kspp', 'DEFAULT_MMAP_MIN_ADDR', '32768')]
         l += [KconfigCheck('self_protection', 'kspp', 'SYN_COOKIES', 'y')] # another reason?
+    if arch == 'X86_64':
+        l += [KconfigCheck('self_protection', 'kspp', 'SLS', 'y')] # vs CVE-2021-26341 in Straight-Line-Speculation
+        l += [AND(KconfigCheck('self_protection', 'kspp', 'INTEL_IOMMU_SVM', 'y'),
+                  iommu_support_is_set)]
+        l += [AND(KconfigCheck('self_protection', 'kspp', 'AMD_IOMMU_V2', 'y'),
+                  iommu_support_is_set)]
     if arch == 'ARM64':
         l += [KconfigCheck('self_protection', 'kspp', 'ARM64_SW_TTBR0_PAN', 'y')]
+        l += [KconfigCheck('self_protection', 'kspp', 'SHADOW_CALL_STACK', 'y')]
+        l += [KconfigCheck('self_protection', 'kspp', 'KASAN_HW_TAGS', 'y')]
     if arch == 'X86_32':
         l += [KconfigCheck('self_protection', 'kspp', 'PAGE_TABLE_ISOLATION', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'HIGHMEM64G', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'X86_PAE', 'y')]
+        l += [AND(KconfigCheck('self_protection', 'kspp', 'INTEL_IOMMU', 'y'),
+                  iommu_support_is_set)]
 
     # 'self_protection', 'clipos'
     l += [KconfigCheck('self_protection', 'clipos', 'SLAB_MERGE_DEFAULT', 'is not set')]
-    if arch in ('X86_64', 'X86_32'):
-        l += [AND(KconfigCheck('self_protection', 'clipos', 'INTEL_IOMMU_DEFAULT_ON', 'y'),
-                  iommu_support_is_set)]
-    if arch == 'X86_64':
-        l += [AND(KconfigCheck('self_protection', 'clipos', 'INTEL_IOMMU_SVM', 'y'),
-                  iommu_support_is_set)]
-    if arch == 'X86_32':
-        l += [AND(KconfigCheck('self_protection', 'clipos', 'INTEL_IOMMU', 'y'),
-                  iommu_support_is_set)]
-
-    # 'self_protection', 'my'
-    if arch == 'X86_64':
-        l += [KconfigCheck('self_protection', 'my', 'SLS', 'y')] # vs CVE-2021-26341 in Straight-Line-Speculation
-        l += [AND(KconfigCheck('self_protection', 'my', 'AMD_IOMMU_V2', 'y'),
-                  iommu_support_is_set)]
-    if arch == 'ARM64':
-        l += [KconfigCheck('self_protection', 'my', 'SHADOW_CALL_STACK', 'y')] # maybe it's alternative to STACKPROTECTOR_STRONG
-        l += [KconfigCheck('self_protection', 'my', 'KASAN_HW_TAGS', 'y')]
-        cfi_clang_is_set = KconfigCheck('self_protection', 'my', 'CFI_CLANG', 'y')
-        l += [cfi_clang_is_set]
-        l += [AND(KconfigCheck('self_protection', 'my', 'CFI_PERMISSIVE', 'is not set'),
-                  cfi_clang_is_set)]
 
     # 'security_policy'
     if arch in ('X86_64', 'ARM64', 'X86_32'):
@@ -567,6 +562,8 @@ def add_kconfig_checks(l, arch):
     l += [devmem_not_set]
     l += [OR(KconfigCheck('cut_attack_surface', 'kspp', 'IO_STRICT_DEVMEM', 'y'),
              devmem_not_set)] # refers to LOCKDOWN
+    l += [AND(KconfigCheck('cut_attack_surface', 'kspp', 'LDISC_AUTOLOAD', 'is not set'),
+              KconfigCheck('cut_attack_surface', 'kspp', 'LDISC_AUTOLOAD'))] # option presence check
     if arch == 'ARM':
         l += [OR(KconfigCheck('cut_attack_surface', 'kspp', 'STRICT_DEVMEM', 'y'),
                  devmem_not_set)] # refers to LOCKDOWN
@@ -638,8 +635,6 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'ACPI_TABLE_UPGRADE', 'is not set')] # refers to LOCKDOWN
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'EFI_CUSTOM_SSDT_OVERLAYS', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'COREDUMP', 'is not set')] # cut userspace attack surface
-    l += [AND(KconfigCheck('cut_attack_surface', 'clipos', 'LDISC_AUTOLOAD', 'is not set'),
-              KconfigCheck('cut_attack_surface', 'clipos', 'LDISC_AUTOLOAD'))] # option presence check
     if arch in ('X86_64', 'X86_32'):
         l += [KconfigCheck('cut_attack_surface', 'clipos', 'X86_INTEL_TSX_MODE_OFF', 'y')] # tsx=off