X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=kconfig_hardened_check%2F__init__.py;h=563091cd77abb9727e8b647fc59847bd1245bcaa;hb=361e571e1926ee172f22f9aad990158e2c03651d;hp=b35f10d67f7cf4601df93b262dba5423460408d9;hpb=029bd7f44ccb305688a6d0bc753c660c688088e9;p=kconfig-hardened-check.git

diff --git a/kconfig_hardened_check/__init__.py b/kconfig_hardened_check/__init__.py
index b35f10d..563091c 100644
--- a/kconfig_hardened_check/__init__.py
+++ b/kconfig_hardened_check/__init__.py
@@ -11,19 +11,18 @@
 #
 #
 # N.B Hardening command line parameters:
-#    slub_debug=FZP
 #    slab_nomerge
 #    page_alloc.shuffle=1
 #    iommu=force (does it help against DMA attacks?)
-#    page_poison=1 (if enabled)
-#    init_on_alloc=1
-#    init_on_free=1
+#    slub_debug=FZ (slow)
+#    init_on_alloc=1 (since v5.3)
+#    init_on_free=1 (since v5.3, otherwise slub_debug=P and page_poison=1)
 #    loadpin.enforce=1
 #    debugfs=no-mount (or off if possible)
 #
 #    Mitigations of CPU vulnerabilities:
 #       Аrch-independent:
-#           mitigations=auto,nosmt
+#           mitigations=auto,nosmt (nosmt is slow)
 #       X86:
 #           spectre_v2=on
 #           pti=on
@@ -322,7 +321,10 @@ def construct_checklist(l, arch):
     if arch == 'ARM':
         l += [OptCheck('self_protection', 'defconfig', 'CPU_SW_DOMAIN_PAN', 'y')]
         l += [OptCheck('self_protection', 'defconfig', 'STACKPROTECTOR_PER_TASK', 'y')]
-    if arch in ('ARM64', 'ARM'):
+    if arch == 'ARM64':
+        l += [OR(OptCheck('self_protection', 'defconfig', 'HARDEN_BRANCH_PREDICTOR', 'y'),
+             VerCheck((5, 10)))] # HARDEN_BRANCH_PREDICTOR is enabled by default since v5.10
+    if arch == 'ARM':
         l += [OptCheck('self_protection', 'defconfig', 'HARDEN_BRANCH_PREDICTOR', 'y')]
 
     # 'self_protection', 'kspp'
@@ -400,7 +402,6 @@ def construct_checklist(l, arch):
     l += [AND(OptCheck('self_protection', 'my', 'UBSAN_BOUNDS', 'y'),
               OptCheck('self_protection', 'my', 'UBSAN_MISC', 'is not set'),
               OptCheck('self_protection', 'my', 'UBSAN_TRAP', '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'),
@@ -526,6 +527,8 @@ def construct_checklist(l, arch):
         l += [OptCheck('userspace_hardening', 'defconfig', 'INTEGRITY', 'y')]
     if arch == 'ARM':
         l += [OptCheck('userspace_hardening', 'my', 'INTEGRITY', 'y')]
+    if arch == 'ARM64':
+        l += [OptCheck('userspace_hardening', 'defconfig', 'ARM64_MTE', 'y')]
     if arch in ('ARM', 'X86_32'):
         l += [OptCheck('userspace_hardening', 'defconfig', 'VMSPLIT_3G', 'y')]
     if arch in ('X86_64', 'ARM64'):