UBSAN_SANITIZE_ALL not available on 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 b5960d9f3b6cb6d21a72d3b4a54e3b00f50e4fab..3361bde35d7851a8b35f5ccc8001a64686eed3bd 100644 (file)
--- a/kconfig_hardened_check/__init__.py
+++ b/kconfig_hardened_check/__init__.py
@@ -325,6 +325,7 @@ def add_kconfig_checks(l, arch):
 
     modules_not_set = KconfigCheck('cut_attack_surface', 'kspp', 'MODULES', 'is not set')
     devmem_not_set = KconfigCheck('cut_attack_surface', 'kspp', 'DEVMEM', 'is not set') # refers to LOCKDOWN
+    efi_not_set = KconfigCheck('cut_attack_surface', 'my', 'EFI', 'is not set')
 
     # 'self_protection', 'defconfig'
     l += [KconfigCheck('self_protection', 'defconfig', 'BUG', 'y')]
@@ -339,11 +340,11 @@ 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 += [KconfigCheck('self_protection', 'defconfig', 'THREAD_INFO_IN_TASK', 'y')]
     iommu_support_is_set = KconfigCheck('self_protection', 'defconfig', 'IOMMU_SUPPORT', 'y')
     l += [iommu_support_is_set] # is needed for mitigating DMA attacks
     if arch in ('X86_64', 'ARM64', 'X86_32'):
         l += [KconfigCheck('self_protection', 'defconfig', 'RANDOMIZE_BASE', 'y')]
-        l += [KconfigCheck('self_protection', 'defconfig', 'THREAD_INFO_IN_TASK', 'y')]
     if arch in ('X86_64', 'ARM64'):
         l += [KconfigCheck('self_protection', 'defconfig', 'VMAP_STACK', 'y')]
     if arch in ('X86_64', 'X86_32'):
@@ -374,10 +375,12 @@ def add_kconfig_checks(l, arch):
         l += [KconfigCheck('self_protection', 'defconfig', 'ARM64_BTI_KERNEL', 'y')]
         l += [OR(KconfigCheck('self_protection', 'defconfig', 'HARDEN_BRANCH_PREDICTOR', 'y'),
                  VersionCheck((5, 10)))] # HARDEN_BRANCH_PREDICTOR is enabled by default since v5.10
+        l += [KconfigCheck('self_protection', 'defconfig', 'MITIGATE_SPECTRE_BRANCH_HISTORY', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'ARM64_MTE', 'y')]
     if arch == 'ARM':
         l += [KconfigCheck('self_protection', 'defconfig', 'CPU_SW_DOMAIN_PAN', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'HARDEN_BRANCH_PREDICTOR', 'y')]
+        l += [KconfigCheck('self_protection', 'defconfig', 'HARDEN_BRANCH_HISTORY', 'y')]
 
     # 'self_protection', 'kspp'
     l += [KconfigCheck('self_protection', 'kspp', 'SECURITY_DMESG_RESTRICT', 'y')]
@@ -438,15 +441,17 @@ def add_kconfig_checks(l, arch):
     # 'self_protection', 'maintainer'
     ubsan_bounds_is_set = KconfigCheck('self_protection', 'maintainer', 'UBSAN_BOUNDS', 'y') # only array index bounds checking
     l += [ubsan_bounds_is_set] # recommended by Kees Cook in /issues/53
-    l += [AND(KconfigCheck('self_protection', 'maintainer', 'UBSAN_SANITIZE_ALL', 'y'),
-              ubsan_bounds_is_set)] # recommended by Kees Cook in /issues/53
+    if arch in ('X86_64', 'ARM64', 'X86_32'):  # ARCH_HAS_UBSAN_SANITIZE_ALL is not enabled for ARM
+        l += [AND(KconfigCheck('self_protection', 'maintainer', 'UBSAN_SANITIZE_ALL', 'y'),
+                  ubsan_bounds_is_set)] # recommended by Kees Cook in /issues/53
     l += [AND(KconfigCheck('self_protection', 'maintainer', 'UBSAN_TRAP', 'y'),
               ubsan_bounds_is_set)] # recommended by Kees Cook in /issues/53
 
     # 'self_protection', 'clipos'
     l += [KconfigCheck('self_protection', 'clipos', 'DEBUG_VIRTUAL', 'y')]
     l += [KconfigCheck('self_protection', 'clipos', 'STATIC_USERMODEHELPER', 'y')] # needs userspace support
-    l += [KconfigCheck('self_protection', 'clipos', 'EFI_DISABLE_PCI_DMA', 'y')]
+    l += [OR(KconfigCheck('self_protection', 'clipos', 'EFI_DISABLE_PCI_DMA', 'y'),
+             efi_not_set)]
     l += [KconfigCheck('self_protection', 'clipos', 'SLAB_MERGE_DEFAULT', 'is not set')] # slab_nomerge
     l += [KconfigCheck('self_protection', 'clipos', 'RANDOM_TRUST_BOOTLOADER', 'is not set')]
     l += [KconfigCheck('self_protection', 'clipos', 'RANDOM_TRUST_CPU', 'is not set')]
@@ -468,7 +473,8 @@ def add_kconfig_checks(l, arch):
                   iommu_support_is_set)]
 
     # 'self_protection', 'my'
-    l += [KconfigCheck('self_protection', 'my', 'RESET_ATTACK_MITIGATION', 'y')] # needs userspace support (systemd)
+    l += [OR(KconfigCheck('self_protection', 'my', 'RESET_ATTACK_MITIGATION', 'y'),
+             efi_not_set)] # needs userspace support (systemd)
     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'),
@@ -499,6 +505,7 @@ def add_kconfig_checks(l, arch):
               loadpin_is_set)]
 
     # 'cut_attack_surface', 'defconfig'
+    l += [KconfigCheck('cut_attack_surface', 'defconfig', 'BPF_UNPRIV_DEFAULT_OFF', 'y')] # see unprivileged_bpf_disabled
     l += [KconfigCheck('cut_attack_surface', 'defconfig', 'SECCOMP', 'y')]
     l += [KconfigCheck('cut_attack_surface', 'defconfig', 'SECCOMP_FILTER', 'y')]
     if arch in ('X86_64', 'ARM64', 'X86_32'):
@@ -608,7 +615,6 @@ def add_kconfig_checks(l, arch):
     # 'cut_attack_surface', 'my'
     l += [OR(KconfigCheck('cut_attack_surface', 'my', 'TRIM_UNUSED_KSYMS', 'y'),
              modules_not_set)]
-    l += [KconfigCheck('cut_attack_surface', 'my', 'BPF_UNPRIV_DEFAULT_OFF', 'y')] # see kernel.unprivileged_bpf_disabled
     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')]