# kconfig-hardened-check
+
[](https://codecov.io/gh/a13xp0p0v/kconfig-hardened-check)
## Motivation
-There are plenty of security hardening options in the Linux kernel. A lot of them are
+There are plenty of security hardening options for the Linux kernel. A lot of them are
not enabled by the major distros. We have to enable these options ourselves to
make our systems more secure.
But nobody likes checking configs manually. So let the computers do their job!
-__kconfig-hardened-check.py__ helps me to check the Linux kernel Kconfig option list
+__kconfig-hardened-check.py__ helps me to check the Linux kernel options
against my security hardening preferences, which are based on the
- [KSPP recommended settings][1],
- [CLIP OS kernel configuration][2],
- Last public [grsecurity][3] patch (options which they disable),
- [SECURITY_LOCKDOWN_LSM][5] patchset,
- - Direct feedback from Linux kernel maintainers (see [#38][6], [#53][15], [#54][16]).
+ - Direct feedback from Linux kernel maintainers (see [#38][6], [#53][15], [#54][16], [#62][17]).
+
+This tool supports checking __Kconfig__ options and __kernel cmdline__ parameters.
I also created [__Linux Kernel Defence Map__][4] that is a graphical representation of the
relationships between security hardening features and the corresponding vulnerability classes
- ARM64
- ARM
+TODO: RISC-V
+
## Installation
You can install the package:
or simply run `./bin/kconfig-hardened-check` from the cloned repository.
+Some Linux distributions also provide `kconfig-hardened-check` as a package.
+
## Usage
```
usage: kconfig-hardened-check [-h] [--version] [-p {X86_64,X86_32,ARM64,ARM}]
[-c CONFIG]
+ [-l CMDLINE]
[-m {verbose,json,show_ok,show_fail}]
A tool for checking the security hardening options of the Linux kernel
-p {X86_64,X86_32,ARM64,ARM}, --print {X86_64,X86_32,ARM64,ARM}
print security hardening preferences for the selected architecture
-c CONFIG, --config CONFIG
- check the kernel config file against these preferences
+ check the kernel kconfig file against these preferences
+ -l CMDLINE, --cmdline CMDLINE
+ check the kernel cmdline file against these preferences
-m {verbose,json,show_ok,show_fail}, --mode {verbose,json,show_ok,show_fail}
choose the report mode
```
-## Output for `Ubuntu 20.04 LTS (Focal Fossa)` kernel config
+## Output modes
+
+ - no `-m` argument for the default output mode (see the example below)
+ - `-m verbose` for printing additional info:
+ - config options without a corresponding check
+ - internals of complex checks with AND/OR, like this:
+```
+-------------------------------------------------------------------------------------------
+ <<< OR >>>
+CONFIG_STRICT_DEVMEM | y |defconfig | cut_attack_surface
+CONFIG_DEVMEM | is not set | kspp | cut_attack_surface
+-------------------------------------------------------------------------------------------
```
-$ ./bin/kconfig-hardened-check -c kconfig_hardened_check/config_files/distros/ubuntu-focal.config
-[+] Config file to check: kconfig_hardened_check/config_files/distros/ubuntu-focal.config
+ - `-m show_fail` for showing only the failed checks
+ - `-m show_ok` for showing only the successful checks
+ - `-m json` for printing the results in JSON format (for combining `kconfig-hardened-check` with other tools)
+
+## Example output for `Fedora 34` kernel config
+```
+$ ./bin/kconfig-hardened-check -c /boot/config-5.16.20-100.fc34.x86_64 -l /proc/cmdline
+[+] Kconfig file to check: /boot/config-5.16.20-100.fc34.x86_64
+[+] Kernel cmdline file to check: /proc/cmdline
[+] Detected architecture: X86_64
-[+] Detected kernel version: 5.4
+[+] Detected kernel version: 5.16
=========================================================================================================================
- option name | desired val | decision | reason | check result
+ option name | type |desired val | decision | reason | check result
=========================================================================================================================
-CONFIG_BUG | y |defconfig | self_protection | OK
-CONFIG_SLUB_DEBUG | y |defconfig | self_protection | OK
-CONFIG_GCC_PLUGINS | y |defconfig | self_protection | FAIL: not found
-CONFIG_STACKPROTECTOR_STRONG | y |defconfig | self_protection | OK
-CONFIG_STRICT_KERNEL_RWX | y |defconfig | self_protection | OK
-CONFIG_STRICT_MODULE_RWX | y |defconfig | self_protection | OK
-CONFIG_REFCOUNT_FULL | y |defconfig | self_protection | FAIL: "is not set"
-CONFIG_IOMMU_SUPPORT | y |defconfig | self_protection | OK
-CONFIG_RANDOMIZE_BASE | y |defconfig | self_protection | OK
-CONFIG_THREAD_INFO_IN_TASK | y |defconfig | self_protection | OK
-CONFIG_VMAP_STACK | y |defconfig | self_protection | OK
-CONFIG_MICROCODE | y |defconfig | self_protection | OK
-CONFIG_RETPOLINE | y |defconfig | self_protection | OK
-CONFIG_X86_SMAP | y |defconfig | self_protection | OK
-CONFIG_SYN_COOKIES | y |defconfig | self_protection | OK
-CONFIG_X86_UMIP | y |defconfig | self_protection | OK: CONFIG_X86_INTEL_UMIP "y"
-CONFIG_PAGE_TABLE_ISOLATION | y |defconfig | self_protection | OK
-CONFIG_RANDOMIZE_MEMORY | y |defconfig | self_protection | OK
-CONFIG_INTEL_IOMMU | y |defconfig | self_protection | OK
-CONFIG_AMD_IOMMU | y |defconfig | self_protection | OK
-CONFIG_SECURITY_DMESG_RESTRICT | y | kspp | self_protection | FAIL: "is not set"
-CONFIG_BUG_ON_DATA_CORRUPTION | y | kspp | self_protection | FAIL: "is not set"
-CONFIG_DEBUG_WX | y | kspp | self_protection | OK
-CONFIG_SCHED_STACK_END_CHECK | y | kspp | self_protection | OK
-CONFIG_SLAB_FREELIST_HARDENED | y | kspp | self_protection | OK
-CONFIG_SLAB_FREELIST_RANDOM | y | kspp | self_protection | OK
-CONFIG_SHUFFLE_PAGE_ALLOCATOR | y | kspp | self_protection | OK
-CONFIG_FORTIFY_SOURCE | y | kspp | self_protection | OK
-CONFIG_DEBUG_LIST | y | kspp | self_protection | FAIL: "is not set"
-CONFIG_DEBUG_SG | y | kspp | self_protection | FAIL: "is not set"
-CONFIG_DEBUG_CREDENTIALS | y | kspp | self_protection | FAIL: "is not set"
-CONFIG_DEBUG_NOTIFIERS | y | kspp | self_protection | FAIL: "is not set"
-CONFIG_INIT_ON_ALLOC_DEFAULT_ON | y | kspp | self_protection | OK
-CONFIG_GCC_PLUGIN_LATENT_ENTROPY | y | kspp | self_protection | FAIL: not found
-CONFIG_GCC_PLUGIN_RANDSTRUCT | y | kspp | self_protection | FAIL: not found
-CONFIG_HARDENED_USERCOPY | y | kspp | self_protection | OK
-CONFIG_HARDENED_USERCOPY_FALLBACK | is not set | kspp | self_protection | FAIL: "y"
-CONFIG_HARDENED_USERCOPY_PAGESPAN | is not set | kspp | self_protection | OK
-CONFIG_MODULE_SIG | y | kspp | self_protection | OK
-CONFIG_MODULE_SIG_ALL | y | kspp | self_protection | OK
-CONFIG_MODULE_SIG_SHA512 | y | kspp | self_protection | OK
-CONFIG_MODULE_SIG_FORCE | y | kspp | self_protection | FAIL: "is not set"
-CONFIG_INIT_STACK_ALL_ZERO | y | kspp | self_protection | FAIL: not found
-CONFIG_INIT_ON_FREE_DEFAULT_ON | y | kspp | self_protection | OK: CONFIG_PAGE_POISONING_ZERO "y"
-CONFIG_GCC_PLUGIN_STACKLEAK | y | kspp | self_protection | FAIL: not found
-CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT | y | kspp | self_protection | FAIL: not found
-CONFIG_DEFAULT_MMAP_MIN_ADDR | 65536 | kspp | self_protection | OK
-CONFIG_UBSAN_BOUNDS | y |maintainer| self_protection | FAIL: not found
-CONFIG_UBSAN_SANITIZE_ALL | y |maintainer| self_protection | FAIL: CONFIG_UBSAN_BOUNDS not "y"
-CONFIG_UBSAN_TRAP | y |maintainer| self_protection | FAIL: CONFIG_UBSAN_BOUNDS not "y"
-CONFIG_DEBUG_VIRTUAL | y | clipos | self_protection | FAIL: "is not set"
-CONFIG_STATIC_USERMODEHELPER | y | clipos | self_protection | FAIL: "is not set"
-CONFIG_EFI_DISABLE_PCI_DMA | y | clipos | self_protection | FAIL: not found
-CONFIG_SLAB_MERGE_DEFAULT | is not set | clipos | self_protection | FAIL: "y"
-CONFIG_RANDOM_TRUST_BOOTLOADER | is not set | clipos | self_protection | FAIL: "y"
-CONFIG_RANDOM_TRUST_CPU | is not set | clipos | self_protection | FAIL: "y"
-CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE | is not set | clipos | self_protection | FAIL: CONFIG_GCC_PLUGIN_RANDSTRUCT not "y"
-CONFIG_STACKLEAK_METRICS | is not set | clipos | self_protection | FAIL: CONFIG_GCC_PLUGIN_STACKLEAK not "y"
-CONFIG_STACKLEAK_RUNTIME_DISABLE | is not set | clipos | self_protection | FAIL: CONFIG_GCC_PLUGIN_STACKLEAK not "y"
-CONFIG_INTEL_IOMMU_DEFAULT_ON | y | clipos | self_protection | FAIL: "is not set"
-CONFIG_INTEL_IOMMU_SVM | y | clipos | self_protection | OK
-CONFIG_RESET_ATTACK_MITIGATION | y | my | self_protection | OK
-CONFIG_AMD_IOMMU_V2 | y | my | self_protection | FAIL: "m"
-CONFIG_SECURITY | y |defconfig | security_policy | OK
-CONFIG_SECURITY_YAMA | y | kspp | security_policy | OK
-CONFIG_SECURITY_WRITABLE_HOOKS | is not set | my | security_policy | OK: not found
-CONFIG_SECURITY_LOCKDOWN_LSM | y | clipos | security_policy | OK
-CONFIG_SECURITY_LOCKDOWN_LSM_EARLY | y | clipos | security_policy | OK
-CONFIG_LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY| y | clipos | security_policy | FAIL: "is not set"
-CONFIG_SECURITY_SAFESETID | y | my | security_policy | OK
-CONFIG_SECURITY_LOADPIN | y | my | security_policy | FAIL: "is not set"
-CONFIG_SECURITY_LOADPIN_ENFORCE | y | my | security_policy | FAIL: CONFIG_SECURITY_LOADPIN not "y"
-CONFIG_SECCOMP | y |defconfig | cut_attack_surface | OK
-CONFIG_SECCOMP_FILTER | y |defconfig | cut_attack_surface | OK
-CONFIG_STRICT_DEVMEM | y |defconfig | cut_attack_surface | OK
-CONFIG_ACPI_CUSTOM_METHOD | is not set | kspp | cut_attack_surface | OK
-CONFIG_COMPAT_BRK | is not set | kspp | cut_attack_surface | OK
-CONFIG_DEVKMEM | is not set | kspp | cut_attack_surface | OK
-CONFIG_COMPAT_VDSO | is not set | kspp | cut_attack_surface | OK
-CONFIG_BINFMT_MISC | is not set | kspp | cut_attack_surface | FAIL: "m"
-CONFIG_INET_DIAG | is not set | kspp | cut_attack_surface | FAIL: "m"
-CONFIG_KEXEC | is not set | kspp | cut_attack_surface | FAIL: "y"
-CONFIG_PROC_KCORE | is not set | kspp | cut_attack_surface | FAIL: "y"
-CONFIG_LEGACY_PTYS | is not set | kspp | cut_attack_surface | FAIL: "y"
-CONFIG_HIBERNATION | is not set | kspp | cut_attack_surface | FAIL: "y"
-CONFIG_IA32_EMULATION | is not set | kspp | cut_attack_surface | FAIL: "y"
-CONFIG_X86_X32 | is not set | kspp | cut_attack_surface | FAIL: "y"
-CONFIG_MODIFY_LDT_SYSCALL | is not set | kspp | cut_attack_surface | FAIL: "y"
-CONFIG_OABI_COMPAT | is not set | kspp | cut_attack_surface | OK: not found
-CONFIG_MODULES | is not set | kspp | cut_attack_surface | FAIL: "y"
-CONFIG_DEVMEM | is not set | kspp | cut_attack_surface | FAIL: "y"
-CONFIG_IO_STRICT_DEVMEM | y | kspp | cut_attack_surface | FAIL: "is not set"
-CONFIG_LEGACY_VSYSCALL_NONE | y | kspp | cut_attack_surface | FAIL: "is not set"
-CONFIG_ZSMALLOC_STAT | is not set |grsecurity| cut_attack_surface | OK
-CONFIG_PAGE_OWNER | is not set |grsecurity| cut_attack_surface | OK
-CONFIG_DEBUG_KMEMLEAK | is not set |grsecurity| cut_attack_surface | OK
-CONFIG_BINFMT_AOUT | is not set |grsecurity| cut_attack_surface | OK: not found
-CONFIG_KPROBE_EVENTS | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_UPROBE_EVENTS | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_GENERIC_TRACER | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_FUNCTION_TRACER | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_STACK_TRACER | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_HIST_TRIGGERS | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_BLK_DEV_IO_TRACE | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_PROC_VMCORE | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_PROC_PAGE_MONITOR | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_USELIB | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_CHECKPOINT_RESTORE | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_USERFAULTFD | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_HWPOISON_INJECT | is not set |grsecurity| cut_attack_surface | FAIL: "m"
-CONFIG_MEM_SOFT_DIRTY | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_DEVPORT | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_DEBUG_FS | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_NOTIFIER_ERROR_INJECTION | is not set |grsecurity| cut_attack_surface | FAIL: "m"
-CONFIG_FAIL_FUTEX | is not set |grsecurity| cut_attack_surface | OK: not found
-CONFIG_PUNIT_ATOM_DEBUG | is not set |grsecurity| cut_attack_surface | FAIL: "m"
-CONFIG_ACPI_CONFIGFS | is not set |grsecurity| cut_attack_surface | FAIL: "m"
-CONFIG_EDAC_DEBUG | is not set |grsecurity| cut_attack_surface | OK
-CONFIG_DRM_I915_DEBUG | is not set |grsecurity| cut_attack_surface | OK
-CONFIG_BCACHE_CLOSURES_DEBUG | is not set |grsecurity| cut_attack_surface | OK
-CONFIG_DVB_C8SECTPFE | is not set |grsecurity| cut_attack_surface | OK: not found
-CONFIG_MTD_SLRAM | is not set |grsecurity| cut_attack_surface | FAIL: "m"
-CONFIG_MTD_PHRAM | is not set |grsecurity| cut_attack_surface | FAIL: "m"
-CONFIG_IO_URING | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_KCMP | is not set |grsecurity| cut_attack_surface | OK: not found
-CONFIG_RSEQ | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_LATENCYTOP | is not set |grsecurity| cut_attack_surface | OK
-CONFIG_KCOV | is not set |grsecurity| cut_attack_surface | OK
-CONFIG_PROVIDE_OHCI1394_DMA_INIT | is not set |grsecurity| cut_attack_surface | OK
-CONFIG_SUNRPC_DEBUG | is not set |grsecurity| cut_attack_surface | FAIL: "y"
-CONFIG_PTDUMP_DEBUGFS | is not set |grsecurity| cut_attack_surface | OK: not found
-CONFIG_DRM_LEGACY | is not set |maintainer| cut_attack_surface | OK
-CONFIG_FB | is not set |maintainer| cut_attack_surface | FAIL: "y"
-CONFIG_VT | is not set |maintainer| cut_attack_surface | FAIL: "y"
-CONFIG_BLK_DEV_FD | is not set |maintainer| cut_attack_surface | FAIL: "m"
-CONFIG_AIO | is not set |grapheneos| cut_attack_surface | FAIL: "y"
-CONFIG_STAGING | is not set | clipos | cut_attack_surface | FAIL: "y"
-CONFIG_KSM | is not set | clipos | cut_attack_surface | FAIL: "y"
-CONFIG_KALLSYMS | is not set | clipos | cut_attack_surface | FAIL: "y"
-CONFIG_X86_VSYSCALL_EMULATION | is not set | clipos | cut_attack_surface | FAIL: "y"
-CONFIG_MAGIC_SYSRQ | is not set | clipos | cut_attack_surface | FAIL: "y"
-CONFIG_KEXEC_FILE | is not set | clipos | cut_attack_surface | FAIL: "y"
-CONFIG_USER_NS | is not set | clipos | cut_attack_surface | FAIL: "y"
-CONFIG_X86_MSR | is not set | clipos | cut_attack_surface | FAIL: "m"
-CONFIG_X86_CPUID | is not set | clipos | cut_attack_surface | FAIL: "m"
-CONFIG_X86_IOPL_IOPERM | is not set | clipos | cut_attack_surface | OK: not found
-CONFIG_ACPI_TABLE_UPGRADE | is not set | clipos | cut_attack_surface | FAIL: "y"
-CONFIG_EFI_CUSTOM_SSDT_OVERLAYS | is not set | clipos | cut_attack_surface | OK: not found
-CONFIG_LDISC_AUTOLOAD | is not set | clipos | cut_attack_surface | FAIL: "y"
-CONFIG_X86_INTEL_TSX_MODE_OFF | y | clipos | cut_attack_surface | OK
-CONFIG_EFI_TEST | is not set | lockdown | cut_attack_surface | FAIL: "m"
-CONFIG_BPF_SYSCALL | is not set | lockdown | cut_attack_surface | FAIL: "y"
-CONFIG_MMIOTRACE_TEST | is not set | lockdown | cut_attack_surface | OK
-CONFIG_KPROBES | is not set | lockdown | cut_attack_surface | FAIL: "y"
-CONFIG_TRIM_UNUSED_KSYMS | y | my | cut_attack_surface | FAIL: not found
-CONFIG_MMIOTRACE | is not set | my | cut_attack_surface | FAIL: "y"
-CONFIG_LIVEPATCH | is not set | my | cut_attack_surface | FAIL: "y"
-CONFIG_IP_DCCP | is not set | my | cut_attack_surface | FAIL: "m"
-CONFIG_IP_SCTP | is not set | my | cut_attack_surface | FAIL: "m"
-CONFIG_FTRACE | is not set | my | cut_attack_surface | FAIL: "y"
-CONFIG_VIDEO_VIVID | is not set | my | cut_attack_surface | FAIL: "m"
-CONFIG_INPUT_EVBUG | is not set | my | cut_attack_surface | FAIL: "m"
-CONFIG_INTEGRITY | y |defconfig |userspace_hardening | OK
-CONFIG_ARCH_MMAP_RND_BITS | 32 | clipos |userspace_hardening | FAIL: "28"
-
-[+] Config check is finished: 'OK' - 68 / 'FAIL' - 96
+CONFIG_BUG |kconfig| y |defconfig | self_protection | OK
+CONFIG_SLUB_DEBUG |kconfig| y |defconfig | self_protection | OK
+CONFIG_GCC_PLUGINS |kconfig| y |defconfig | self_protection | OK
+CONFIG_STACKPROTECTOR |kconfig| y |defconfig | self_protection | OK
+CONFIG_STACKPROTECTOR_STRONG |kconfig| y |defconfig | self_protection | FAIL: "is not set"
+CONFIG_STRICT_KERNEL_RWX |kconfig| y |defconfig | self_protection | OK
+CONFIG_STRICT_MODULE_RWX |kconfig| y |defconfig | self_protection | OK
+CONFIG_REFCOUNT_FULL |kconfig| y |defconfig | self_protection | OK: version >= 5.5
+CONFIG_THREAD_INFO_IN_TASK |kconfig| y |defconfig | self_protection | OK
+CONFIG_IOMMU_SUPPORT |kconfig| y |defconfig | self_protection | OK
+CONFIG_RANDOMIZE_BASE |kconfig| y |defconfig | self_protection | OK
+CONFIG_VMAP_STACK |kconfig| y |defconfig | self_protection | OK
+CONFIG_MICROCODE |kconfig| y |defconfig | self_protection | OK
+CONFIG_RETPOLINE |kconfig| y |defconfig | self_protection | OK
+CONFIG_X86_SMAP |kconfig| y |defconfig | self_protection | OK
+CONFIG_SYN_COOKIES |kconfig| y |defconfig | self_protection | OK
+CONFIG_X86_UMIP |kconfig| y |defconfig | self_protection | OK
+CONFIG_PAGE_TABLE_ISOLATION |kconfig| y |defconfig | self_protection | OK
+CONFIG_RANDOMIZE_MEMORY |kconfig| y |defconfig | self_protection | OK
+CONFIG_INTEL_IOMMU |kconfig| y |defconfig | self_protection | OK
+CONFIG_AMD_IOMMU |kconfig| y |defconfig | self_protection | OK
+CONFIG_SECURITY_DMESG_RESTRICT |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_BUG_ON_DATA_CORRUPTION |kconfig| y | kspp | self_protection | OK
+CONFIG_DEBUG_WX |kconfig| y | kspp | self_protection | OK
+CONFIG_SCHED_STACK_END_CHECK |kconfig| y | kspp | self_protection | OK
+CONFIG_SLAB_FREELIST_HARDENED |kconfig| y | kspp | self_protection | OK
+CONFIG_SLAB_FREELIST_RANDOM |kconfig| y | kspp | self_protection | OK
+CONFIG_SHUFFLE_PAGE_ALLOCATOR |kconfig| y | kspp | self_protection | OK
+CONFIG_FORTIFY_SOURCE |kconfig| y | kspp | self_protection | OK
+CONFIG_DEBUG_LIST |kconfig| y | kspp | self_protection | OK
+CONFIG_DEBUG_SG |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_DEBUG_CREDENTIALS |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_DEBUG_NOTIFIERS |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_INIT_ON_ALLOC_DEFAULT_ON |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_GCC_PLUGIN_LATENT_ENTROPY |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_KFENCE |kconfig| y | kspp | self_protection | OK
+CONFIG_WERROR |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_IOMMU_DEFAULT_DMA_STRICT |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_ZERO_CALL_USED_REGS |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_GCC_PLUGIN_RANDSTRUCT |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_HARDENED_USERCOPY |kconfig| y | kspp | self_protection | OK
+CONFIG_HARDENED_USERCOPY_FALLBACK |kconfig| is not set | kspp | self_protection | OK: not found
+CONFIG_HARDENED_USERCOPY_PAGESPAN |kconfig| is not set | kspp | self_protection | OK: not found
+CONFIG_MODULE_SIG |kconfig| y | kspp | self_protection | OK
+CONFIG_MODULE_SIG_ALL |kconfig| y | kspp | self_protection | OK
+CONFIG_MODULE_SIG_SHA512 |kconfig| y | kspp | self_protection | OK
+CONFIG_MODULE_SIG_FORCE |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_INIT_STACK_ALL_ZERO |kconfig| y | kspp | self_protection | FAIL: not found
+CONFIG_INIT_ON_FREE_DEFAULT_ON |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_GCC_PLUGIN_STACKLEAK |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT |kconfig| y | kspp | self_protection | FAIL: "is not set"
+CONFIG_SCHED_CORE |kconfig| y | kspp | self_protection | OK
+CONFIG_DEFAULT_MMAP_MIN_ADDR |kconfig| 65536 | kspp | self_protection | OK
+CONFIG_UBSAN_BOUNDS |kconfig| y |maintainer| self_protection | FAIL: not found
+CONFIG_UBSAN_SANITIZE_ALL |kconfig| y |maintainer| self_protection | FAIL: CONFIG_UBSAN_BOUNDS not "y"
+CONFIG_UBSAN_TRAP |kconfig| y |maintainer| self_protection | FAIL: CONFIG_UBSAN_BOUNDS not "y"
+CONFIG_DEBUG_VIRTUAL |kconfig| y | clipos | self_protection | FAIL: "is not set"
+CONFIG_STATIC_USERMODEHELPER |kconfig| y | clipos | self_protection | FAIL: "is not set"
+CONFIG_EFI_DISABLE_PCI_DMA |kconfig| y | clipos | self_protection | FAIL: "is not set"
+CONFIG_SLAB_MERGE_DEFAULT |kconfig| is not set | clipos | self_protection | OK
+CONFIG_RANDOM_TRUST_BOOTLOADER |kconfig| is not set | clipos | self_protection | OK
+CONFIG_RANDOM_TRUST_CPU |kconfig| is not set | clipos | self_protection | FAIL: "y"
+CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE|kconfig| is not set | clipos | self_protection | FAIL: CONFIG_GCC_PLUGIN_RANDSTRUCT not "y"
+CONFIG_STACKLEAK_METRICS |kconfig| is not set | clipos | self_protection | FAIL: CONFIG_GCC_PLUGIN_STACKLEAK not "y"
+CONFIG_STACKLEAK_RUNTIME_DISABLE |kconfig| is not set | clipos | self_protection | FAIL: CONFIG_GCC_PLUGIN_STACKLEAK not "y"
+CONFIG_INTEL_IOMMU_DEFAULT_ON |kconfig| y | clipos | self_protection | FAIL: "is not set"
+CONFIG_INTEL_IOMMU_SVM |kconfig| y | clipos | self_protection | OK
+CONFIG_RESET_ATTACK_MITIGATION |kconfig| y | my | self_protection | FAIL: "is not set"
+CONFIG_SLS |kconfig| y | my | self_protection | FAIL: not found
+CONFIG_AMD_IOMMU_V2 |kconfig| y | my | self_protection | FAIL: "m"
+CONFIG_SECURITY |kconfig| y |defconfig | security_policy | OK
+CONFIG_SECURITY_YAMA |kconfig| y | kspp | security_policy | OK
+CONFIG_SECURITY_SELINUX_DISABLE |kconfig| is not set | kspp | security_policy | OK
+CONFIG_SECURITY_LOCKDOWN_LSM |kconfig| y | clipos | security_policy | OK
+CONFIG_SECURITY_LOCKDOWN_LSM_EARLY |kconfig| y | clipos | security_policy | OK
+CONFIG_LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY|kconfig| y | clipos | security_policy | FAIL: "is not set"
+CONFIG_SECURITY_WRITABLE_HOOKS |kconfig| is not set | my | security_policy | OK: not found
+CONFIG_SECURITY_SAFESETID |kconfig| y | my | security_policy | FAIL: "is not set"
+CONFIG_SECURITY_LOADPIN |kconfig| y | my | security_policy | FAIL: "is not set"
+CONFIG_SECURITY_LOADPIN_ENFORCE |kconfig| y | my | security_policy | FAIL: CONFIG_SECURITY_LOADPIN not "y"
+CONFIG_BPF_UNPRIV_DEFAULT_OFF |kconfig| y |defconfig |cut_attack_surface| OK
+CONFIG_SECCOMP |kconfig| y |defconfig |cut_attack_surface| OK
+CONFIG_SECCOMP_FILTER |kconfig| y |defconfig |cut_attack_surface| OK
+CONFIG_STRICT_DEVMEM |kconfig| y |defconfig |cut_attack_surface| OK
+CONFIG_ACPI_CUSTOM_METHOD |kconfig| is not set | kspp |cut_attack_surface| OK
+CONFIG_COMPAT_BRK |kconfig| is not set | kspp |cut_attack_surface| OK
+CONFIG_DEVKMEM |kconfig| is not set | kspp |cut_attack_surface| OK: not found
+CONFIG_COMPAT_VDSO |kconfig| is not set | kspp |cut_attack_surface| OK
+CONFIG_BINFMT_MISC |kconfig| is not set | kspp |cut_attack_surface| FAIL: "m"
+CONFIG_INET_DIAG |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"
+CONFIG_KEXEC |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"
+CONFIG_PROC_KCORE |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"
+CONFIG_LEGACY_PTYS |kconfig| is not set | kspp |cut_attack_surface| OK
+CONFIG_HIBERNATION |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"
+CONFIG_IA32_EMULATION |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"
+CONFIG_X86_X32 |kconfig| is not set | kspp |cut_attack_surface| OK
+CONFIG_MODIFY_LDT_SYSCALL |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"
+CONFIG_OABI_COMPAT |kconfig| is not set | kspp |cut_attack_surface| OK: not found
+CONFIG_X86_MSR |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"
+CONFIG_MODULES |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"
+CONFIG_DEVMEM |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"
+CONFIG_IO_STRICT_DEVMEM |kconfig| y | kspp |cut_attack_surface| OK
+CONFIG_LEGACY_VSYSCALL_NONE |kconfig| y | kspp |cut_attack_surface| FAIL: "is not set"
+CONFIG_ZSMALLOC_STAT |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_PAGE_OWNER |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_DEBUG_KMEMLEAK |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_BINFMT_AOUT |kconfig| is not set | grsec |cut_attack_surface| OK: not found
+CONFIG_KPROBE_EVENTS |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_UPROBE_EVENTS |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_GENERIC_TRACER |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_FUNCTION_TRACER |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_STACK_TRACER |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_HIST_TRIGGERS |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_BLK_DEV_IO_TRACE |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_PROC_VMCORE |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_PROC_PAGE_MONITOR |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_USELIB |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_CHECKPOINT_RESTORE |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_USERFAULTFD |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_HWPOISON_INJECT |kconfig| is not set | grsec |cut_attack_surface| FAIL: "m"
+CONFIG_MEM_SOFT_DIRTY |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_DEVPORT |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_DEBUG_FS |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_NOTIFIER_ERROR_INJECTION |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_FAIL_FUTEX |kconfig| is not set | grsec |cut_attack_surface| OK: not found
+CONFIG_PUNIT_ATOM_DEBUG |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_ACPI_CONFIGFS |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_EDAC_DEBUG |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_DRM_I915_DEBUG |kconfig| is not set | grsec |cut_attack_surface| OK: not found
+CONFIG_BCACHE_CLOSURES_DEBUG |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_DVB_C8SECTPFE |kconfig| is not set | grsec |cut_attack_surface| OK: not found
+CONFIG_MTD_SLRAM |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_MTD_PHRAM |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_IO_URING |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_KCMP |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_RSEQ |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_LATENCYTOP |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_KCOV |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_PROVIDE_OHCI1394_DMA_INIT |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_SUNRPC_DEBUG |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"
+CONFIG_PTDUMP_DEBUGFS |kconfig| is not set | grsec |cut_attack_surface| OK
+CONFIG_DRM_LEGACY |kconfig| is not set |maintainer|cut_attack_surface| OK
+CONFIG_FB |kconfig| is not set |maintainer|cut_attack_surface| FAIL: "y"
+CONFIG_VT |kconfig| is not set |maintainer|cut_attack_surface| FAIL: "y"
+CONFIG_BLK_DEV_FD |kconfig| is not set |maintainer|cut_attack_surface| FAIL: "m"
+CONFIG_BLK_DEV_FD_RAWCMD |kconfig| is not set |maintainer|cut_attack_surface| OK: not found
+CONFIG_AIO |kconfig| is not set |grapheneos|cut_attack_surface| FAIL: "y"
+CONFIG_STAGING |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_KSM |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_KALLSYMS |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_X86_VSYSCALL_EMULATION |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_MAGIC_SYSRQ |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_KEXEC_FILE |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_USER_NS |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_X86_CPUID |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_X86_IOPL_IOPERM |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_ACPI_TABLE_UPGRADE |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_EFI_CUSTOM_SSDT_OVERLAYS |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_LDISC_AUTOLOAD |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"
+CONFIG_X86_INTEL_TSX_MODE_OFF |kconfig| y | clipos |cut_attack_surface| OK
+CONFIG_BPF_SYSCALL |kconfig| is not set | lockdown |cut_attack_surface| FAIL: "y"
+CONFIG_EFI_TEST |kconfig| is not set | lockdown |cut_attack_surface| FAIL: "m"
+CONFIG_MMIOTRACE_TEST |kconfig| is not set | lockdown |cut_attack_surface| OK
+CONFIG_KPROBES |kconfig| is not set | lockdown |cut_attack_surface| FAIL: "y"
+CONFIG_TRIM_UNUSED_KSYMS |kconfig| y | my |cut_attack_surface| FAIL: not found
+CONFIG_MMIOTRACE |kconfig| is not set | my |cut_attack_surface| FAIL: "y"
+CONFIG_LIVEPATCH |kconfig| is not set | my |cut_attack_surface| FAIL: "y"
+CONFIG_IP_DCCP |kconfig| is not set | my |cut_attack_surface| OK
+CONFIG_IP_SCTP |kconfig| is not set | my |cut_attack_surface| FAIL: "m"
+CONFIG_FTRACE |kconfig| is not set | my |cut_attack_surface| FAIL: "y"
+CONFIG_VIDEO_VIVID |kconfig| is not set | my |cut_attack_surface| OK: not found
+CONFIG_INPUT_EVBUG |kconfig| is not set | my |cut_attack_surface| OK
+CONFIG_KGDB |kconfig| is not set | my |cut_attack_surface| FAIL: "y"
+CONFIG_INTEGRITY |kconfig| y |defconfig | harden_userspace | OK
+CONFIG_ARCH_MMAP_RND_BITS |kconfig| 32 | clipos | harden_userspace | FAIL: "28"
+pti |cmdline| on | kspp | self_protection | FAIL: not found
+
+[+] Config check is finished: 'OK' - 82 / 'FAIL' - 94
```
## kconfig-hardened-check versioning
<br />
+__Q:__ Can I easily check which kernel versions support some Kconfig option?
+
+__A:__ Yes, see the [LKDDb][18] project (Linux Kernel Driver Database) by Giacomo Catenazzi [@cateee][19].
+You can use it for the `mainline` or `stable` tree from [kernel.org][20] or for your custom kernel sources.
+
+<br />
+
__Q:__ Why enabling `CONFIG_STATIC_USERMODEHELPER` breaks various things in my GNU/Linux system?
Do I really need that feature?
[14]: https://github.com/speed47
[15]: https://github.com/a13xp0p0v/kconfig-hardened-check/issues/53
[16]: https://github.com/a13xp0p0v/kconfig-hardened-check/pull/54
+[17]: https://github.com/a13xp0p0v/kconfig-hardened-check/pull/62
+[18]: https://cateee.net/lkddb/web-lkddb/
+[19]: https://github.com/cateee/lkddb
+[20]: https://kernel.org/
projects / kconfig-hardened-check.git / blobdiff