X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig_hardened_check%2F__init__.py;h=65d51fb3b27d4a4f698baca84a9d0b69dd0dd453;hb=c29d335f0dc9ae00a856d482bb5285d308b6ac96;hp=4370bb47c802cdf7ecea769437afcf95ace21cc5;hpb=04fdc011a333a696fa820d956d923b5eca9730fc;p=kconfig-hardened-check.git

diff --git a/kconfig_hardened_check/__init__.py b/kconfig_hardened_check/__init__.py
index 4370bb4..65d51fb 100644
--- a/kconfig_hardened_check/__init__.py
+++ b/kconfig_hardened_check/__init__.py
@@ -10,14 +10,6 @@
 # Please don't cry if my Python code looks like C.
 #
 #
-# N.B Missing hardening command line parameters:
-#    iommu=force (does it help against DMA attacks?)
-#
-#    Hardware tag-based KASAN with arm64 Memory Tagging Extension (MTE):
-#           kasan=on
-#           kasan.stacktrace=off
-#           kasan.fault=panic
-#
 # N.B. Hardening sysctls:
 #    kernel.kptr_restrict=2 (or 1?)
 #    kernel.dmesg_restrict=1 (also see the kconfig option)
@@ -378,7 +370,7 @@ def add_kconfig_checks(l, arch):
              VersionCheck((5, 5)))] # REFCOUNT_FULL is enabled by default since v5.5
     if arch in ('X86_64', 'ARM64', 'X86_32'):
         l += [KconfigCheck('self_protection', 'defconfig', 'RANDOMIZE_BASE', 'y')]
-    if arch in ('X86_64', 'ARM64'):
+    if arch in ('X86_64', 'ARM64', 'ARM'):
         l += [KconfigCheck('self_protection', 'defconfig', 'VMAP_STACK', 'y')]
     if arch in ('X86_64', 'X86_32'):
         l += [KconfigCheck('self_protection', 'defconfig', 'DEBUG_WX', 'y')]
@@ -442,7 +434,6 @@ 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]
@@ -509,6 +500,7 @@ 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', 'SCHED_CORE', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'DEFAULT_MMAP_MIN_ADDR', '65536')]
         l += [KconfigCheck('self_protection', 'kspp', 'IOMMU_DEFAULT_DMA_STRICT', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'IOMMU_DEFAULT_PASSTHROUGH', 'is not set')] # true if IOMMU_DEFAULT_DMA_STRICT is set
@@ -528,7 +520,7 @@ def add_kconfig_checks(l, arch):
     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')]
+        l += [KconfigCheck('self_protection', 'kspp', 'KASAN_HW_TAGS', 'y')] # see also: kasan=on, kasan.stacktrace=off, kasan.fault=panic
     if arch == 'X86_32':
         l += [KconfigCheck('self_protection', 'kspp', 'PAGE_TABLE_ISOLATION', 'y')]
         l += [KconfigCheck('self_protection', 'kspp', 'HIGHMEM64G', 'y')]
@@ -796,6 +788,8 @@ def add_cmdline_checks(l, arch):
 
     # 'self_protection', 'clipos'
     l += [CmdlineCheck('self_protection', 'clipos', 'page_alloc.shuffle', '1')]
+    if arch in ('X86_64', 'X86_32'):
+        l += [CmdlineCheck('self_protection', 'clipos', 'iommu', 'force')]
 
     # 'cut_attack_surface', 'defconfig'
     if arch in ('X86_64', 'X86_32'):
@@ -1105,12 +1099,16 @@ def main():
             parse_cmdline_file(parsed_cmdline_options, args.cmdline)
             populate_with_data(config_checklist, parsed_cmdline_options, 'cmdline')
 
-        # now everything is ready for performing the checks
+        # now everything is ready, perform the checks
         perform_checks(config_checklist)
 
-        # finally print the results
         if mode == 'verbose':
-            print_unknown_options(config_checklist, parsed_kconfig_options)
+            # print the parsed options without the checks (for debugging)
+            all_parsed_options = parsed_kconfig_options # assignment does not copy
+            all_parsed_options.update(parsed_cmdline_options)
+            print_unknown_options(config_checklist, all_parsed_options)
+
+        # finally print the results
         print_checklist(mode, config_checklist, True)
 
         sys.exit(0)