X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig_hardened_check%2F__init__.py;h=8f59b34f3fc17ba0ee287a08235f3f888499575d;hb=f47bd6f7ed3c79d485e44f3aea2b173655707b1c;hp=2cbcfa5e8197f592c7ad005aea65244d1504f56b;hpb=fea07508c858d152711d51597f7c9df13f3cad02;p=kconfig-hardened-check.git

diff --git a/kconfig_hardened_check/__init__.py b/kconfig_hardened_check/__init__.py
index 2cbcfa5..8f59b34 100644
--- a/kconfig_hardened_check/__init__.py
+++ b/kconfig_hardened_check/__init__.py
@@ -18,7 +18,6 @@
 #       Аrch-independent:
 #           mitigations=auto,nosmt (nosmt is slow)
 #       X86:
-#           spectre_v2=on
 #           spec_store_bypass_disable=on
 #           l1tf=full,force
 #           l1d_flush=on (a part of the l1tf option)
@@ -332,8 +331,8 @@ def add_kconfig_checks(l, arch):
     #     when the tool doesn't check the cmdline.
 
     efi_not_set = KconfigCheck('-', '-', 'EFI', 'is not set')
-    cc_is_gcc = KconfigCheck('-', '-', 'CC_IS_GCC', 'y')
-    cc_is_clang = KconfigCheck('-', '-', 'CC_IS_CLANG', 'y')
+    cc_is_gcc = KconfigCheck('-', '-', 'CC_IS_GCC', 'y') # exists since v4.18
+    cc_is_clang = KconfigCheck('-', '-', 'CC_IS_CLANG', 'y') # exists since v4.18
 
     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
@@ -505,6 +504,9 @@ def add_kconfig_checks(l, arch):
     # 'self_protection', 'my'
     l += [OR(KconfigCheck('self_protection', 'my', 'RESET_ATTACK_MITIGATION', 'y'),
              efi_not_set)] # needs userspace support (systemd)
+    l += [OR(KconfigCheck('self_protection', 'my', 'UBSAN_LOCAL_BOUNDS', 'y'),
+             AND(ubsan_bounds_is_set,
+                 cc_is_gcc))]
     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'),
@@ -695,6 +697,12 @@ def add_cmdline_checks(l, arch):
     # very complex and not give a 100% guarantee anyway.
 
     # 'self_protection', 'defconfig'
+    l += [CmdlineCheck('self_protection', 'defconfig', 'nosmep', 'is not set')]
+    l += [CmdlineCheck('self_protection', 'defconfig', 'nosmap', 'is not set')]
+    l += [CmdlineCheck('self_protection', 'defconfig', 'nokaslr', 'is not set')]
+    l += [CmdlineCheck('self_protection', 'defconfig', 'nopti', 'is not set')]
+    l += [CmdlineCheck('self_protection', 'defconfig', 'nospectre_v1', 'is not set')]
+    l += [CmdlineCheck('self_protection', 'defconfig', 'nospectre_v2', 'is not set')]
     if arch == 'ARM64':
         l += [OR(CmdlineCheck('self_protection', 'defconfig', 'rodata', 'full'),
                  AND(KconfigCheck('self_protection', 'defconfig', 'RODATA_FULL_DEFAULT_ENABLED', 'y'),
@@ -723,26 +731,25 @@ def add_cmdline_checks(l, arch):
              AND(KconfigCheck('self_protection', 'kspp', 'IOMMU_DEFAULT_PASSTHROUGH', 'is not set'),
                  CmdlineCheck('self_protection', 'kspp', 'iommu.passthrough', 'is not set')))]
     # The cmdline checks compatible with the kconfig recommendations of the KSPP project...
-    l += [CmdlineCheck('self_protection', 'kspp', 'nokaslr', 'is not set')]
     l += [OR(CmdlineCheck('self_protection', 'kspp', 'hardened_usercopy', '1'),
              AND(KconfigCheck('self_protection', 'kspp', 'HARDENED_USERCOPY', 'y'),
                  CmdlineCheck('self_protection', 'kspp', 'hardened_usercopy', 'is not set')))]
     l += [OR(CmdlineCheck('self_protection', 'kspp', 'slab_common.usercopy_fallback', '0'),
              AND(KconfigCheck('self_protection', 'kspp', 'HARDENED_USERCOPY_FALLBACK', 'is not set'),
-                 CmdlineCheck('self_protection', 'kspp', 'slab_common.usercopy_fallback', 'is not set')))] # ... the end
+                 CmdlineCheck('self_protection', 'kspp', 'slab_common.usercopy_fallback', 'is not set')))]
+    # ... the end
     if arch in ('X86_64', 'ARM64', 'X86_32'):
         l += [OR(CmdlineCheck('self_protection', 'kspp', 'randomize_kstack_offset', '1'),
                  AND(KconfigCheck('self_protection', 'kspp', 'RANDOMIZE_KSTACK_OFFSET_DEFAULT', 'y'),
                      CmdlineCheck('self_protection', 'kspp', 'randomize_kstack_offset', 'is not set')))]
     if arch in ('X86_64', 'X86_32'):
-        l += [CmdlineCheck('self_protection', 'kspp', 'pti', 'on')]
+        l += [AND(CmdlineCheck('self_protection', 'kspp', 'pti', 'on'),
+                  CmdlineCheck('self_protection', 'defconfig', 'nopti', 'is not set'))]
 
     # 'self_protection', 'clipos'
     l += [CmdlineCheck('self_protection', 'clipos', 'page_alloc.shuffle', '1')]
-
-    # 'self_protection', 'my'
-    l += [CmdlineCheck('self_protection', 'my', 'nosmep', 'is not set')]
-    l += [CmdlineCheck('self_protection', 'my', 'nosmap', 'is not set')]
+    if arch in ('X86_64', 'X86_32'):
+        l += [CmdlineCheck('self_protection', 'clipos', 'spectre_v2', 'on')]
 
     # 'cut_attack_surface', 'kspp'
     if arch == 'X86_64':
@@ -902,6 +909,9 @@ def normalize_cmdline_options(option, value):
     if option == 'pti':
         # See pti_check_boottime_disable() in linux/arch/x86/mm/pti.c
         return value
+    if option == 'spectre_v2':
+        # See spectre_v2_parse_cmdline() in linux/arch/x86/kernel/cpu/bugs.c
+        return value
     if option == 'debugfs':
         # See debugfs_kernel() in fs/debugfs/inode.c
         return value