Do not check CONFIG_HARDEN_EL2_VECTORS for v5.9+

[kconfig-hardened-check.git] / kconfig_hardened_check / __init__.py

diff --git a/kconfig_hardened_check/__init__.py b/kconfig_hardened_check/__init__.py
index ca593db5f7b3582f13a292e12391b6f10678004e..0d1e10cfd9a2f22bad8cdf00dc5c704254c32ad4 100644 (file)
--- a/kconfig_hardened_check/__init__.py
+++ b/kconfig_hardened_check/__init__.py
@@ -41,6 +41,7 @@
 #    kernel.kexec_load_disabled=1
 #    kernel.yama.ptrace_scope=3
 #    user.max_user_namespaces=0
+#    what about bpf_jit_enable?
 #    kernel.unprivileged_bpf_disabled=1
 #    net.core.bpf_jit_harden=2
 #
@@ -292,7 +293,8 @@ def construct_checklist(l, arch):
     if arch == 'ARM64':
         l += [OptCheck('self_protection', 'defconfig', 'ARM64_PAN', 'y')]
         l += [OptCheck('self_protection', 'defconfig', 'UNMAP_KERNEL_AT_EL0', 'y')]
-        l += [OptCheck('self_protection', 'defconfig', 'HARDEN_EL2_VECTORS', 'y')]
+        l += [OR(OptCheck('self_protection', 'defconfig', 'HARDEN_EL2_VECTORS', 'y'),
+                 VerCheck((5,9)))] # HARDEN_EL2_VECTORS was removed in v5.9
         l += [OptCheck('self_protection', 'defconfig', 'RODATA_FULL_DEFAULT_ENABLED', 'y')]
         l += [OptCheck('self_protection', 'defconfig', 'ARM64_PTR_AUTH', 'y')]
     if arch in ('X86_64', 'ARM64'):
@@ -378,7 +380,7 @@ def construct_checklist(l, arch):
                   iommu_support_is_set)]
 
     # 'self_protection', 'my'
-    l += [OptCheck('self_protection', 'my', 'SLUB_DEBUG_ON', 'y')]
+    l += [OptCheck('self_protection', 'my', 'SLUB_DEBUG_ON', 'y')] # TODO: is it better to set that via kernel cmd?
     l += [OptCheck('self_protection', 'my', 'RESET_ATTACK_MITIGATION', 'y')] # needs userspace support (systemd)
     if arch == 'X86_64':
         l += [AND(OptCheck('self_protection', 'my', 'AMD_IOMMU_V2', 'y'),
@@ -475,13 +477,14 @@ def construct_checklist(l, arch):
     l += [OptCheck('cut_attack_surface', 'clipos', 'X86_CPUID', 'is not set')]
     l += [OptCheck('cut_attack_surface', 'clipos', 'IO_URING', 'is not set')]
     l += [OptCheck('cut_attack_surface', 'clipos', 'X86_IOPL_IOPERM', 'is not set')] # refers to LOCKDOWN
+    l += [OptCheck('cut_attack_surface', 'clipos', 'ACPI_TABLE_UPGRADE', 'is not set')] # refers to LOCKDOWN
+    l += [OptCheck('cut_attack_surface', 'clipos', 'EFI_CUSTOM_SSDT_OVERLAYS', 'is not set')]
     l += [AND(OptCheck('cut_attack_surface', 'clipos', 'LDISC_AUTOLOAD', 'is not set'),
               PresenceCheck('LDISC_AUTOLOAD'))]
     if arch in ('X86_64', 'X86_32'):
         l += [OptCheck('cut_attack_surface', 'clipos', 'X86_INTEL_TSX_MODE_OFF', 'y')] # tsx=off
 
     # 'cut_attack_surface', 'lockdown'
-    l += [OptCheck('cut_attack_surface', 'lockdown', 'ACPI_TABLE_UPGRADE', 'is not set')] # refers to LOCKDOWN
     l += [OptCheck('cut_attack_surface', 'lockdown', 'EFI_TEST', 'is not set')] # refers to LOCKDOWN
     l += [OptCheck('cut_attack_surface', 'lockdown', 'BPF_SYSCALL', 'is not set')] # refers to LOCKDOWN
     l += [OptCheck('cut_attack_surface', 'lockdown', 'MMIOTRACE_TEST', 'is not set')] # refers to LOCKDOWN
@@ -492,7 +495,6 @@ def construct_checklist(l, arch):
     l += [OptCheck('cut_attack_surface', 'my', 'IP_DCCP', 'is not set')]
     l += [OptCheck('cut_attack_surface', 'my', 'IP_SCTP', 'is not set')]
     l += [OptCheck('cut_attack_surface', 'my', 'FTRACE', 'is not set')] # refers to LOCKDOWN
-    l += [OptCheck('cut_attack_surface', 'my', 'BPF_JIT', 'is not set')]
     l += [OptCheck('cut_attack_surface', 'my', 'VIDEO_VIVID', 'is not set')]
     l += [OptCheck('cut_attack_surface', 'my', 'INPUT_EVBUG', 'is not set')] # Can be used as a keylogger