Split the HW_RANDOM_TPM check (it's enabled by default on ARM and ARM64)

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

diff --git a/kernel_hardening_checker/checks.py b/kernel_hardening_checker/checks.py
index 48f256c73ce1eb52440b802e0b66aacca7a1b4ae..6f615bad08292a70e294852a6278ddfcfc671e60 100644 (file)
--- a/kernel_hardening_checker/checks.py
+++ b/kernel_hardening_checker/checks.py
@@ -53,6 +53,8 @@ def add_kconfig_checks(l, arch):
              modules_not_set)] # DEBUG_SET_MODULE_RONX was before v4.11
     l += [OR(KconfigCheck('self_protection', 'defconfig', 'REFCOUNT_FULL', 'y'),
              VersionCheck((5, 5)))] # REFCOUNT_FULL is enabled by default since v5.5
+    l += [OR(KconfigCheck('self_protection', 'defconfig', 'INIT_STACK_ALL_ZERO', 'y'),
+             KconfigCheck('self_protection', 'kspp', 'GCC_PLUGIN_STRUCTLEAK_BYREF_ALL', 'y'))]
     if arch in ('X86_64', 'ARM64', 'X86_32'):
         l += [KconfigCheck('self_protection', 'defconfig', 'RANDOMIZE_BASE', 'y')]
     if arch in ('X86_64', 'ARM64', 'ARM'):
@@ -80,6 +82,7 @@ def add_kconfig_checks(l, arch):
         l += [OR(KconfigCheck('self_protection', 'defconfig', 'X86_UMIP', 'y'),
                  KconfigCheck('self_protection', 'defconfig', 'X86_INTEL_UMIP', 'y'))]
     if arch in ('ARM64', 'ARM'):
+        l += [KconfigCheck('self_protection', 'defconfig', 'HW_RANDOM_TPM', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'IOMMU_DEFAULT_DMA_STRICT', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'IOMMU_DEFAULT_PASSTHROUGH', 'is not set')] # true if IOMMU_DEFAULT_DMA_STRICT is set
         l += [KconfigCheck('self_protection', 'defconfig', 'STACKPROTECTOR_PER_TASK', 'y')]
@@ -126,7 +129,6 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('self_protection', 'kspp', 'DEBUG_CREDENTIALS', 'y')]
     l += [KconfigCheck('self_protection', 'kspp', 'DEBUG_NOTIFIERS', 'y')]
     l += [KconfigCheck('self_protection', 'kspp', 'INIT_ON_ALLOC_DEFAULT_ON', 'y')]
-    l += [KconfigCheck('self_protection', 'kspp', 'HW_RANDOM_TPM', 'y')]
     l += [KconfigCheck('self_protection', 'kspp', 'STATIC_USERMODEHELPER', 'y')] # needs userspace support
     kfence_is_set = KconfigCheck('self_protection', 'kspp', 'KFENCE', 'y')
     l += [kfence_is_set]
@@ -154,8 +156,6 @@ def add_kconfig_checks(l, arch):
              modules_not_set)]
     l += [OR(KconfigCheck('self_protection', 'kspp', 'MODULE_SIG_FORCE', 'y'),
              modules_not_set)] # refers to LOCKDOWN
-    l += [OR(KconfigCheck('self_protection', 'kspp', 'INIT_STACK_ALL_ZERO', 'y'),
-             KconfigCheck('self_protection', 'kspp', 'GCC_PLUGIN_STRUCTLEAK_BYREF_ALL', 'y'))]
     l += [OR(KconfigCheck('self_protection', 'kspp', 'INIT_ON_FREE_DEFAULT_ON', 'y'),
              KconfigCheck('self_protection', 'kspp', 'PAGE_POISONING_ZERO', 'y'))]
              # CONFIG_INIT_ON_FREE_DEFAULT_ON was added in v5.3.
@@ -198,6 +198,7 @@ def add_kconfig_checks(l, arch):
         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', 'HW_RANDOM_TPM', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'SCHED_CORE', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'DEFAULT_MMAP_MIN_ADDR', '65536')]
         l += [KconfigCheck('self_protection', 'kspp', 'IOMMU_DEFAULT_DMA_STRICT', 'y')]
@@ -231,6 +232,7 @@ def add_kconfig_checks(l, arch):
 
     # 'self_protection', 'my'
     l += [KconfigCheck('self_protection', 'my', 'LIST_HARDENED', 'y')]
+    l += [KconfigCheck('self_protection', 'my', 'RANDOM_KMALLOC_CACHES', 'y')]
 
     # 'security_policy'
     if arch in ('X86_64', 'ARM64', 'X86_32'):
@@ -246,6 +248,7 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_LOCKDOWN_LSM_EARLY', 'y')]
     l += [KconfigCheck('security_policy', 'kspp', 'LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY', 'y')]
     l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_WRITABLE_HOOKS', 'is not set')] # refers to SECURITY_SELINUX_DISABLE
+    l += [KconfigCheck('security_policy', 'my', 'SECURITY_SELINUX_DEBUG', 'is not set')]
     l += [OR(KconfigCheck('security_policy', 'my', 'SECURITY_SELINUX', 'y'),
              KconfigCheck('security_policy', 'my', 'SECURITY_APPARMOR', 'y'),
              KconfigCheck('security_policy', 'my', 'SECURITY_SMACK', 'y'),
@@ -280,6 +283,7 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('cut_attack_surface', 'kspp', 'MODIFY_LDT_SYSCALL', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'kspp', 'OABI_COMPAT', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'kspp', 'X86_MSR', 'is not set')] # refers to LOCKDOWN
+    l += [KconfigCheck('cut_attack_surface', 'kspp', 'LEGACY_TIOCSTI', 'is not set')]
     l += [modules_not_set]
     l += [devmem_not_set]
     l += [OR(KconfigCheck('cut_attack_surface', 'kspp', 'IO_STRICT_DEVMEM', 'y'),
@@ -369,7 +373,6 @@ def add_kconfig_checks(l, arch):
     l += [bpf_syscall_not_set] # refers to LOCKDOWN
 
     # 'cut_attack_surface', 'my'
-    l += [KconfigCheck('cut_attack_surface', 'my', 'LEGACY_TIOCSTI', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'my', 'MMIOTRACE', 'is not set')] # refers to LOCKDOWN (permissive)
     l += [KconfigCheck('cut_attack_surface', 'my', 'LIVEPATCH', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'my', 'IP_DCCP', 'is not set')]