X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig_hardened_check%2F__init__.py;h=f2170a5a2ae3c32163c47266ef1daa0b8c48d53c;hb=6f7e9c10f051e9b7120891403026cb927864cac0;hp=a926402426c3eba4ba100a9fb0f17b4a81d4bcfa;hpb=3f57717b4ec311b04fbc658616f835f1f3abbf51;p=kconfig-hardened-check.git

diff --git a/kconfig_hardened_check/__init__.py b/kconfig_hardened_check/__init__.py
index a926402..f2170a5 100644
--- a/kconfig_hardened_check/__init__.py
+++ b/kconfig_hardened_check/__init__.py
@@ -17,16 +17,10 @@
 #       Аrch-independent:
 #       X86:
 #           l1d_flush=on (a part of the l1tf option)
-#           mds=full,nosmt
 #           tsx=off
 #       ARM64:
 #           kpti=on
-#           ssbd=force-on
 #
-#    Should NOT be set:
-#           sysrq_always_enabled
-#           arm64.nobti
-#           arm64.nopauth
 #           arm64.nomte
 #
 #    Hardware tag-based KASAN with arm64 Memory Tagging Extension (MTE):
@@ -370,8 +364,11 @@ def add_kconfig_checks(l, arch):
     # 'self_protection', 'defconfig'
     l += [KconfigCheck('self_protection', 'defconfig', 'BUG', 'y')]
     l += [KconfigCheck('self_protection', 'defconfig', 'SLUB_DEBUG', 'y')]
+    l += [KconfigCheck('self_protection', 'defconfig', 'THREAD_INFO_IN_TASK', 'y')]
     gcc_plugins_support_is_set = KconfigCheck('self_protection', 'defconfig', 'GCC_PLUGINS', 'y')
     l += [gcc_plugins_support_is_set]
+    iommu_support_is_set = KconfigCheck('self_protection', 'defconfig', 'IOMMU_SUPPORT', 'y')
+    l += [iommu_support_is_set] # is needed for mitigating DMA attacks
     l += [OR(KconfigCheck('self_protection', 'defconfig', 'STACKPROTECTOR', 'y'),
              KconfigCheck('self_protection', 'defconfig', 'CC_STACKPROTECTOR', 'y'),
              KconfigCheck('self_protection', 'defconfig', 'CC_STACKPROTECTOR_REGULAR', 'y'),
@@ -386,9 +383,6 @@ 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')]
     if arch in ('X86_64', 'ARM64'):
@@ -399,9 +393,9 @@ def add_kconfig_checks(l, arch):
         l += [KconfigCheck('self_protection', 'defconfig', 'X86_MCE_AMD', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'MICROCODE', 'y')] # is needed for mitigating CPU bugs
         l += [KconfigCheck('self_protection', 'defconfig', 'RETPOLINE', 'y')]
+        l += [KconfigCheck('self_protection', 'defconfig', 'SYN_COOKIES', 'y')] # another reason?
         l += [OR(KconfigCheck('self_protection', 'defconfig', 'X86_SMAP', 'y'),
                  VersionCheck((5, 19)))] # X86_SMAP is enabled by default since v5.19
-        l += [KconfigCheck('self_protection', 'defconfig', 'SYN_COOKIES', 'y')] # another reason?
         l += [OR(KconfigCheck('self_protection', 'defconfig', 'X86_UMIP', 'y'),
                  KconfigCheck('self_protection', 'defconfig', 'X86_INTEL_UMIP', 'y'))]
     if arch in ('ARM64', 'ARM'):
@@ -418,17 +412,17 @@ def add_kconfig_checks(l, arch):
         l += [KconfigCheck('self_protection', 'defconfig', 'ARM64_EPAN', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'UNMAP_KERNEL_AT_EL0', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'ARM64_E0PD', 'y')]
-        l += [OR(KconfigCheck('self_protection', 'defconfig', 'HARDEN_EL2_VECTORS', 'y'),
-                 AND(KconfigCheck('self_protection', 'defconfig', 'RANDOMIZE_BASE', 'y'),
-                     VersionCheck((5, 9))))] # HARDEN_EL2_VECTORS was included in RANDOMIZE_BASE in v5.9
         l += [KconfigCheck('self_protection', 'defconfig', 'RODATA_FULL_DEFAULT_ENABLED', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'ARM64_PTR_AUTH_KERNEL', 'y')]
         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')]
         l += [KconfigCheck('self_protection', 'defconfig', 'RANDOMIZE_MODULE_REGION_FULL', 'y')]
+        l += [OR(KconfigCheck('self_protection', 'defconfig', 'HARDEN_EL2_VECTORS', 'y'),
+                 AND(KconfigCheck('self_protection', 'defconfig', 'RANDOMIZE_BASE', 'y'),
+                     VersionCheck((5, 9))))] # HARDEN_EL2_VECTORS was included in RANDOMIZE_BASE in v5.9
+        l += [OR(KconfigCheck('self_protection', 'defconfig', 'HARDEN_BRANCH_PREDICTOR', 'y'),
+                 VersionCheck((5, 10)))] # HARDEN_BRANCH_PREDICTOR is enabled by default since v5.10
     if arch == 'ARM':
         l += [KconfigCheck('self_protection', 'defconfig', 'CPU_SW_DOMAIN_PAN', 'y')]
         l += [KconfigCheck('self_protection', 'defconfig', 'HARDEN_BRANCH_PREDICTOR', 'y')]
@@ -448,8 +442,6 @@ 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 += [AND(KconfigCheck('self_protection', 'kspp', 'GCC_PLUGIN_LATENT_ENTROPY', 'y'),
-              gcc_plugins_support_is_set)]
     l += [KconfigCheck('self_protection', 'kspp', 'KFENCE', 'y')]
     l += [KconfigCheck('self_protection', 'kspp', 'WERROR', 'y')]
     l += [KconfigCheck('self_protection', 'kspp', 'IOMMU_DEFAULT_DMA_STRICT', 'y')]
@@ -470,6 +462,8 @@ def add_kconfig_checks(l, arch):
               hardened_usercopy_is_set)]
     l += [AND(KconfigCheck('self_protection', 'kspp', 'HARDENED_USERCOPY_PAGESPAN', 'is not set'),
               hardened_usercopy_is_set)]
+    l += [AND(KconfigCheck('self_protection', 'kspp', 'GCC_PLUGIN_LATENT_ENTROPY', 'y'),
+              gcc_plugins_support_is_set)]
     l += [OR(KconfigCheck('self_protection', 'kspp', 'MODULE_SIG', 'y'),
              modules_not_set)]
     l += [OR(KconfigCheck('self_protection', 'kspp', 'MODULE_SIG_ALL', 'y'),
@@ -564,10 +558,10 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('security_policy', 'kspp', 'SECURITY_WRITABLE_HOOKS', 'is not set')] # refers to SECURITY_SELINUX_DISABLE
 
     # 'cut_attack_surface', 'defconfig'
-    l += [OR(KconfigCheck('cut_attack_surface', 'defconfig', 'BPF_UNPRIV_DEFAULT_OFF', 'y'),
-             bpf_syscall_not_set)] # see unprivileged_bpf_disabled
     l += [KconfigCheck('cut_attack_surface', 'defconfig', 'SECCOMP', 'y')]
     l += [KconfigCheck('cut_attack_surface', 'defconfig', 'SECCOMP_FILTER', 'y')]
+    l += [OR(KconfigCheck('cut_attack_surface', 'defconfig', 'BPF_UNPRIV_DEFAULT_OFF', 'y'),
+             bpf_syscall_not_set)] # see unprivileged_bpf_disabled
     if arch in ('X86_64', 'ARM64', 'X86_32'):
         l += [OR(KconfigCheck('cut_attack_surface', 'defconfig', 'STRICT_DEVMEM', 'y'),
                  devmem_not_set)] # refers to LOCKDOWN
@@ -595,11 +589,11 @@ def add_kconfig_checks(l, arch):
              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', 'is present'))]
+    if arch == 'X86_64':
+        l += [KconfigCheck('cut_attack_surface', 'kspp', 'LEGACY_VSYSCALL_NONE', 'y')] # 'vsyscall=none'
     if arch == 'ARM':
         l += [OR(KconfigCheck('cut_attack_surface', 'kspp', 'STRICT_DEVMEM', 'y'),
                  devmem_not_set)] # refers to LOCKDOWN
-    if arch == 'X86_64':
-        l += [KconfigCheck('cut_attack_surface', 'kspp', 'LEGACY_VSYSCALL_NONE', 'y')] # 'vsyscall=none'
 
     # 'cut_attack_surface', 'grsec'
     l += [KconfigCheck('cut_attack_surface', 'grsec', 'ZSMALLOC_STAT', 'is not set')]
@@ -655,7 +649,6 @@ def add_kconfig_checks(l, arch):
     # 'cut_attack_surface', 'clipos'
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'STAGING', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'KSM', 'is not set')] # to prevent FLUSH+RELOAD attack
-#   l += [KconfigCheck('cut_attack_surface', 'clipos', 'IKCONFIG', 'is not set')] # no, IKCONFIG is needed for this check :)
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'KALLSYMS', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'X86_VSYSCALL_EMULATION', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'clipos', 'MAGIC_SYSRQ', 'is not set')]
@@ -666,18 +659,17 @@ 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 += [KconfigCheck('cut_attack_surface', 'clipos', 'IKCONFIG', 'is not set')] # no, IKCONFIG is needed for this check :)
     if arch in ('X86_64', 'X86_32'):
         l += [KconfigCheck('cut_attack_surface', 'clipos', 'X86_INTEL_TSX_MODE_OFF', 'y')] # tsx=off
 
     # 'cut_attack_surface', 'lockdown'
-    l += [bpf_syscall_not_set] # refers to LOCKDOWN
     l += [KconfigCheck('cut_attack_surface', 'lockdown', 'EFI_TEST', 'is not set')] # refers to LOCKDOWN
     l += [KconfigCheck('cut_attack_surface', 'lockdown', 'MMIOTRACE_TEST', 'is not set')] # refers to LOCKDOWN
     l += [KconfigCheck('cut_attack_surface', 'lockdown', 'KPROBES', 'is not set')] # refers to LOCKDOWN
+    l += [bpf_syscall_not_set] # refers to LOCKDOWN
 
     # 'cut_attack_surface', 'my'
-    l += [OR(KconfigCheck('cut_attack_surface', 'my', 'TRIM_UNUSED_KSYMS', 'y'),
-             modules_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')]
@@ -686,6 +678,8 @@ def add_kconfig_checks(l, arch):
     l += [KconfigCheck('cut_attack_surface', 'my', 'VIDEO_VIVID', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'my', 'INPUT_EVBUG', 'is not set')] # Can be used as a keylogger
     l += [KconfigCheck('cut_attack_surface', 'my', 'KGDB', 'is not set')]
+    l += [OR(KconfigCheck('cut_attack_surface', 'my', 'TRIM_UNUSED_KSYMS', 'y'),
+             modules_not_set)]
 
     # 'harden_userspace'
     if arch in ('X86_64', 'ARM64', 'X86_32'):
@@ -731,6 +725,8 @@ def add_cmdline_checks(l, arch):
     l += [CmdlineCheck('self_protection', 'defconfig', 'nospectre_v1', 'is not set')]
     l += [CmdlineCheck('self_protection', 'defconfig', 'nospectre_v2', 'is not set')]
     l += [CmdlineCheck('self_protection', 'defconfig', 'nospec_store_bypass_disable', 'is not set')]
+    l += [CmdlineCheck('self_protection', 'defconfig', 'arm64.nobti', 'is not set')]
+    l += [CmdlineCheck('self_protection', 'defconfig', 'arm64.nopauth', 'is not set')]
     l += [OR(CmdlineCheck('self_protection', 'defconfig', 'mitigations', 'is not off'),
              CmdlineCheck('self_protection', 'defconfig', 'mitigations', 'is not set'))]
     l += [OR(CmdlineCheck('self_protection', 'defconfig', 'spectre_v2', 'is not off'),
@@ -741,7 +737,20 @@ def add_cmdline_checks(l, arch):
              CmdlineCheck('self_protection', 'defconfig', 'spec_store_bypass_disable', 'is not set'))]
     l += [OR(CmdlineCheck('self_protection', 'defconfig', 'l1tf', 'is not off'),
              CmdlineCheck('self_protection', 'defconfig', 'l1tf', 'is not set'))]
+    l += [OR(CmdlineCheck('self_protection', 'defconfig', 'mds', 'is not off'),
+             CmdlineCheck('self_protection', 'defconfig', 'mds', 'is not set'))]
+    l += [OR(CmdlineCheck('self_protection', 'defconfig', 'tsx_async_abort', 'is not off'),
+             CmdlineCheck('self_protection', 'defconfig', 'tsx_async_abort', 'is not set'))]
+    l += [OR(CmdlineCheck('self_protection', 'defconfig', 'srbds', 'is not off'),
+             CmdlineCheck('self_protection', 'defconfig', 'srbds', 'is not set'))]
+    l += [OR(CmdlineCheck('self_protection', 'defconfig', 'mmio_stale_data', 'is not off'),
+             CmdlineCheck('self_protection', 'defconfig', 'mmio_stale_data', 'is not set'))]
+    l += [OR(CmdlineCheck('self_protection', 'defconfig', 'retbleed', 'is not off'),
+             CmdlineCheck('self_protection', 'defconfig', 'retbleed', 'is not set'))]
     if arch == 'ARM64':
+        l += [OR(CmdlineCheck('self_protection', 'defconfig', 'ssbd', 'kernel'),
+                 CmdlineCheck('self_protection', 'my', 'ssbd', 'force-on'),
+                 CmdlineCheck('self_protection', 'defconfig', 'ssbd', 'is not set'))]
         l += [OR(CmdlineCheck('self_protection', 'defconfig', 'rodata', 'full'),
                  AND(KconfigCheck('self_protection', 'defconfig', 'RODATA_FULL_DEFAULT_ENABLED', 'y'),
                      CmdlineCheck('self_protection', 'defconfig', 'rodata', 'is not set')))]
@@ -799,6 +808,8 @@ def add_cmdline_checks(l, arch):
     l += [OR(CmdlineCheck('cut_attack_surface', 'grsec', 'debugfs', 'off'),
              KconfigCheck('cut_attack_surface', 'grsec', 'DEBUG_FS', 'is not set'))] # ... the end
 
+    # 'cut_attack_surface', 'my'
+    l += [CmdlineCheck('cut_attack_surface', 'my', 'sysrq_always_enabled', 'is not set')]
 
 def print_unknown_options(checklist, parsed_options):
     known_options = []
@@ -964,6 +975,21 @@ def normalize_cmdline_options(option, value):
     if option == 'l1tf':
         # See l1tf_cmdline() in arch/x86/kernel/cpu/bugs.c
         return value
+    if option == 'mds':
+        # See mds_cmdline() in arch/x86/kernel/cpu/bugs.c
+        return value
+    if option == 'tsx_async_abort':
+        # See tsx_async_abort_parse_cmdline() in arch/x86/kernel/cpu/bugs.c
+        return value
+    if option == 'srbds':
+        # See srbds_parse_cmdline() in arch/x86/kernel/cpu/bugs.c
+        return value
+    if option == 'mmio_stale_data':
+        # See mmio_stale_data_parse_cmdline() in arch/x86/kernel/cpu/bugs.c
+        return value
+    if option == 'retbleed':
+        # See retbleed_parse_cmdline() in arch/x86/kernel/cpu/bugs.c
+        return value
 
     # Implement a limited part of the kstrtobool() logic
     if value in ('1', 'on', 'On', 'ON', 'y', 'Y', 'yes', 'Yes', 'YES'):