# ssbd=force-on
#
# N.B. Hardening sysctls:
-# kernel.kptr_restrict=2
-# kernel.dmesg_restrict=1
+# kernel.kptr_restrict=2 (or 1?)
+# kernel.dmesg_restrict=1 (also see the kconfig option)
# kernel.perf_event_paranoid=3
# kernel.kexec_load_disabled=1
# kernel.yama.ptrace_scope=3
VerCheck((5, 5)))] # REFCOUNT_FULL is enabled by default since v5.5
iommu_support_is_set = OptCheck('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 += [OptCheck('self_protection', 'defconfig', 'RANDOMIZE_BASE', 'y')]
+ l += [OptCheck('self_protection', 'defconfig', 'THREAD_INFO_IN_TASK', 'y')]
+ if arch in ('X86_64', 'ARM64'):
+ l += [OptCheck('self_protection', 'defconfig', 'VMAP_STACK', 'y')]
if arch in ('X86_64', 'X86_32'):
l += [OptCheck('self_protection', 'defconfig', 'MICROCODE', 'y')] # is needed for mitigating CPU bugs
l += [OptCheck('self_protection', 'defconfig', 'RETPOLINE', 'y')]
l += [OptCheck('self_protection', 'defconfig', 'RODATA_FULL_DEFAULT_ENABLED', 'y')]
l += [OptCheck('self_protection', 'defconfig', 'ARM64_PTR_AUTH', 'y')]
l += [OptCheck('self_protection', 'defconfig', 'ARM64_BTI_KERNEL', 'y')]
- if arch in ('X86_64', 'ARM64'):
- l += [OptCheck('self_protection', 'defconfig', 'VMAP_STACK', 'y')]
- if arch in ('X86_64', 'ARM64', 'X86_32'):
- l += [OptCheck('self_protection', 'defconfig', 'RANDOMIZE_BASE', 'y')]
- l += [OptCheck('self_protection', 'defconfig', 'THREAD_INFO_IN_TASK', 'y')]
- if arch == 'ARM':
- l += [OptCheck('self_protection', 'defconfig', 'CPU_SW_DOMAIN_PAN', 'y')]
- l += [OptCheck('self_protection', 'defconfig', 'STACKPROTECTOR_PER_TASK', 'y')]
- 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', 'CPU_SW_DOMAIN_PAN', 'y')]
+ l += [OptCheck('self_protection', 'defconfig', 'STACKPROTECTOR_PER_TASK', 'y')]
l += [OptCheck('self_protection', 'defconfig', 'HARDEN_BRANCH_PREDICTOR', 'y')]
# 'self_protection', 'kspp'
+ l += [OptCheck('self_protection', 'kspp', 'SECURITY_DMESG_RESTRICT', 'y')]
l += [OptCheck('self_protection', 'kspp', 'BUG_ON_DATA_CORRUPTION', 'y')]
l += [OptCheck('self_protection', 'kspp', 'DEBUG_WX', 'y')]
l += [OptCheck('self_protection', 'kspp', 'SCHED_STACK_END_CHECK', 'y')]
l += [stackleak_is_set]
if arch in ('X86_64', 'X86_32'):
l += [OptCheck('self_protection', 'kspp', 'DEFAULT_MMAP_MIN_ADDR', '65536')]
+ if arch in ('ARM64', 'ARM'):
+ l += [OptCheck('self_protection', 'kspp', 'DEFAULT_MMAP_MIN_ADDR', '32768')]
+ l += [OptCheck('self_protection', 'kspp', 'SYN_COOKIES', 'y')] # another reason?
+ if arch == 'ARM64':
+ l += [OptCheck('self_protection', 'kspp', 'ARM64_SW_TTBR0_PAN', 'y')]
if arch == 'X86_32':
l += [OptCheck('self_protection', 'kspp', 'PAGE_TABLE_ISOLATION', 'y')]
l += [OptCheck('self_protection', 'kspp', 'HIGHMEM64G', 'y')]
l += [OptCheck('self_protection', 'kspp', 'X86_PAE', 'y')]
- if arch == 'ARM64':
- l += [OptCheck('self_protection', 'kspp', 'ARM64_SW_TTBR0_PAN', 'y')]
- if arch in ('ARM64', 'ARM'):
- l += [OptCheck('self_protection', 'kspp', 'SYN_COOKIES', 'y')] # another reason?
- l += [OptCheck('self_protection', 'kspp', 'DEFAULT_MMAP_MIN_ADDR', '32768')]
# 'self_protection', 'clipos'
- l += [OptCheck('self_protection', 'clipos', 'SECURITY_DMESG_RESTRICT', 'y')]
l += [OptCheck('self_protection', 'clipos', 'DEBUG_VIRTUAL', 'y')]
l += [OptCheck('self_protection', 'clipos', 'STATIC_USERMODEHELPER', 'y')] # needs userspace support
l += [OptCheck('self_protection', 'clipos', 'EFI_DISABLE_PCI_DMA', 'y')]