kernel-hardening-checker是一款针对Linux内核的安全加固工具，广大研究人员可以使用该工具检查并实现 Linux 内核安全强化选项。
Linux 内核有很多安全强化选项。其中很多选项在主流发行版中都没有启用。我们必须自己启用这些选项，才能让我们的系统更安全。但很多人并不喜欢手动检查这些选项，kernel-hardening-checker便应运而生。
当前版本的kernel-hardening-checker支持检查下列内容：
1、Kconfig 选项（编译时）
2、内核命令行参数（启动时）
3、Sysctl 参数（运行时）
1、X86_64
2、X86_32
3、ARM64
4、ARM
由于该工具基于Python 3开发，因此我们首先需要在本地设备上安装并配置好最新版本的Python 3环境。
源码获取
广大研究人员可以直接使用下列命令将该项目源码克隆至本地：
git clone https://github.com/a13xp0p0v/kernel-hardening-checker.git
然后切换到项目目录中，使用pip命令和项目提供的requirements.txt安装该工具所需的其他依赖组件：
cd kernel-hardening-checkerpython setup.py
pip安装
pip install git+https://github.com/a13xp0p0v/kernel-hardening-checkerusage: kernel-hardening-checker [-h] [--version] [-m {verbose,json,show_ok,show_fail}][] [-l CMDLINE] [-s SYSCTL] [-v KERNEL_VERSION][][]A tool for checking the security hardening options of the Linux kerneloptions:-h, --help 显示此帮助消息并退出--version 显示程序的版本号并退出-m {verbose,json,show_ok,show_fail}, --mode {verbose,json,show_ok,show_fail}选择报告模式-c CONFIG, --config CONFIG检查内核Kconfig文件中的安全强化选项-l CMDLINE, --cmdline CMDLINE检查内核cmdline文件中的安全强化选项-s SYSCTL, --sysctl SYSCTL检查sysctl输出文件中的安全强化选项-v KERNEL_VERSION, --kernel-version KERNEL_VERSION从内核版本文件中提取版本-p {X86_64,X86_32,ARM64,ARM}, --print {X86_64,X86_32,ARM64,ARM}打印所选微架构的安全强化建议-g {X86_64,X86_32,ARM64,ARM}, --generate {X86_64,X86_32,ARM64,ARM}
对于选定的微体系结构使用安全强化选项生成Kconfig代码段
Ubuntu 22.04内核配置的示例输出
$ ./bin/kernel-hardening-checker -c kernel_hardening_checker/config_files/distros/ubuntu-22.04.config -l /proc/cmdline -s kernel_hardening_checker/config_files/distros/example_sysctls.txt[+] Kconfig file to check: kernel_hardening_checker/config_files/distros/ubuntu-22.04.config[+] Kernel cmdline file to check: /proc/cmdline[+] Sysctl output file to check: kernel_hardening_checker/config_files/distros/example_sysctls.txt[+] Detected microarchitecture: X86_64[+] Detected kernel version: (5, 15, 0)[+] Detected compiler: GCC 110200=========================================================================================================================option_name | type |desired_val | decision | reason | check_result=========================================================================================================================CONFIG_BUG |kconfig| y |defconfig | self_protection | OKCONFIG_SLUB_DEBUG |kconfig| y |defconfig | self_protection | OKCONFIG_THREAD_INFO_IN_TASK |kconfig| y |defconfig | self_protection | OKCONFIG_IOMMU_SUPPORT |kconfig| y |defconfig | self_protection | OKCONFIG_STACKPROTECTOR |kconfig| y |defconfig | self_protection | OKCONFIG_STACKPROTECTOR_STRONG |kconfig| y |defconfig | self_protection | OKCONFIG_STRICT_KERNEL_RWX |kconfig| y |defconfig | self_protection | OKCONFIG_STRICT_MODULE_RWX |kconfig| y |defconfig | self_protection | OKCONFIG_REFCOUNT_FULL |kconfig| y |defconfig | self_protection | OK: version >= (5, 4, 208)CONFIG_INIT_STACK_ALL_ZERO |kconfig| y |defconfig | self_protection | FAIL: is not foundCONFIG_CPU_MITIGATIONS |kconfig| y |defconfig | self_protection | FAIL: is not foundCONFIG_RANDOMIZE_BASE |kconfig| y |defconfig | self_protection | OKCONFIG_VMAP_STACK |kconfig| y |defconfig | self_protection | OKCONFIG_DEBUG_WX |kconfig| y |defconfig | self_protection | OKCONFIG_WERROR |kconfig| y |defconfig | self_protection | FAIL: "is not set"CONFIG_X86_MCE |kconfig| y |defconfig | self_protection | OKCONFIG_SYN_COOKIES |kconfig| y |defconfig | self_protection | OKCONFIG_MICROCODE |kconfig| y |defconfig | self_protection | OKCONFIG_MICROCODE_INTEL |kconfig| y |defconfig | self_protection | OKCONFIG_MICROCODE_AMD |kconfig| y |defconfig | self_protection | OKCONFIG_X86_SMAP |kconfig| y |defconfig | self_protection | OKCONFIG_X86_UMIP |kconfig| y |defconfig | self_protection | OKCONFIG_X86_MCE_INTEL |kconfig| y |defconfig | self_protection | OKCONFIG_X86_MCE_AMD |kconfig| y |defconfig | self_protection | OKCONFIG_MITIGATION_RETPOLINE |kconfig| y |defconfig | self_protection | OK: CONFIG_RETPOLINE is "y"CONFIG_MITIGATION_RFDS |kconfig| y |defconfig | self_protection | FAIL: is not foundCONFIG_MITIGATION_SPECTRE_BHI |kconfig| y |defconfig | self_protection | FAIL: is not foundCONFIG_RANDOMIZE_MEMORY |kconfig| y |defconfig | self_protection | OKCONFIG_X86_KERNEL_IBT |kconfig| y |defconfig | self_protection | FAIL: is not foundCONFIG_MITIGATION_PAGE_TABLE_ISOLATION |kconfig| y |defconfig | self_protection | OK: CONFIG_PAGE_TABLE_ISOLATION is "y"CONFIG_MITIGATION_SRSO |kconfig| y |defconfig | self_protection | FAIL: is not foundCONFIG_INTEL_IOMMU |kconfig| y |defconfig | self_protection | OKCONFIG_AMD_IOMMU |kconfig| y |defconfig | self_protection | OKCONFIG_LIST_HARDENED |kconfig| y | kspp | self_protection | FAIL: is not foundCONFIG_RANDOM_KMALLOC_CACHES |kconfig| y | kspp | self_protection | FAIL: is not foundCONFIG_SLAB_MERGE_DEFAULT |kconfig| is not set | kspp | self_protection | FAIL: "y"CONFIG_BUG_ON_DATA_CORRUPTION |kconfig| y | kspp | self_protection | FAIL: "is not set"CONFIG_SLAB_FREELIST_HARDENED |kconfig| y | kspp | self_protection | OKCONFIG_SLAB_FREELIST_RANDOM |kconfig| y | kspp | self_protection | OKCONFIG_SHUFFLE_PAGE_ALLOCATOR |kconfig| y | kspp | self_protection | OKCONFIG_FORTIFY_SOURCE |kconfig| y | kspp | self_protection | OKCONFIG_DEBUG_LIST |kconfig| y | kspp | self_protection | FAIL: "is not set"CONFIG_DEBUG_VIRTUAL |kconfig| y | kspp | self_protection | FAIL: "is not set"CONFIG_DEBUG_SG |kconfig| y | kspp | self_protection | FAIL: "is not set"CONFIG_INIT_ON_ALLOC_DEFAULT_ON |kconfig| y | kspp | self_protection | OKCONFIG_STATIC_USERMODEHELPER |kconfig| y | kspp | self_protection | FAIL: "is not set"CONFIG_SCHED_CORE |kconfig| y | kspp | self_protection | OKCONFIG_SECURITY_LOCKDOWN_LSM |kconfig| y | kspp | self_protection | OKCONFIG_SECURITY_LOCKDOWN_LSM_EARLY |kconfig| y | kspp | self_protection | OKCONFIG_LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY|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_SCHED_STACK_END_CHECK |kconfig| y | kspp | self_protection | OKCONFIG_KFENCE |kconfig| y | kspp | self_protection | OKCONFIG_KFENCE_SAMPLE_INTERVAL |kconfig| 100 | kspp | self_protection | FAIL: "0"CONFIG_RANDSTRUCT_FULL |kconfig| y | kspp | self_protection | FAIL: is not foundCONFIG_HARDENED_USERCOPY |kconfig| y | kspp | self_protection | OKCONFIG_HARDENED_USERCOPY_FALLBACK |kconfig| is not set | kspp | self_protection | OKCONFIG_HARDENED_USERCOPY_PAGESPAN |kconfig| is not set | kspp | self_protection | OKCONFIG_GCC_PLUGIN_LATENT_ENTROPY |kconfig| y | kspp | self_protection | FAIL: is not foundCONFIG_MODULE_SIG |kconfig| y | kspp | self_protection | OKCONFIG_MODULE_SIG_ALL |kconfig| y | kspp | self_protection | OKCONFIG_MODULE_SIG_SHA512 |kconfig| y | kspp | self_protection | OKCONFIG_MODULE_SIG_FORCE |kconfig| y | kspp | self_protection | FAIL: "is not set"CONFIG_INIT_ON_FREE_DEFAULT_ON |kconfig| y | kspp | self_protection | FAIL: "is not set"CONFIG_EFI_DISABLE_PCI_DMA |kconfig| y | kspp | self_protection | FAIL: "is not set"CONFIG_RESET_ATTACK_MITIGATION |kconfig| y | kspp | self_protection | OKCONFIG_UBSAN_BOUNDS |kconfig| y | kspp | self_protection | OKCONFIG_UBSAN_LOCAL_BOUNDS |kconfig| y | kspp | self_protection | OK: CONFIG_UBSAN_BOUNDS is "y"CONFIG_UBSAN_TRAP |kconfig| y | kspp | self_protection | FAIL: CONFIG_UBSAN_ENUM is not "is not set"CONFIG_UBSAN_SANITIZE_ALL |kconfig| y | kspp | self_protection | OKCONFIG_GCC_PLUGIN_STACKLEAK |kconfig| y | kspp | self_protection | FAIL: is not foundCONFIG_STACKLEAK_METRICS |kconfig| is not set | kspp | self_protection | FAIL: CONFIG_GCC_PLUGIN_STACKLEAK is not "y"CONFIG_STACKLEAK_RUNTIME_DISABLE |kconfig| is not set | kspp | self_protection | FAIL: CONFIG_GCC_PLUGIN_STACKLEAK is not "y"CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT |kconfig| y | kspp | self_protection | OKCONFIG_PAGE_TABLE_CHECK |kconfig| y | kspp | self_protection | FAIL: is not foundCONFIG_PAGE_TABLE_CHECK_ENFORCED |kconfig| y | kspp | self_protection | FAIL: is not foundCONFIG_CFI_CLANG |kconfig| y | kspp | self_protection | FAIL: CONFIG_CC_IS_CLANG is not "y"CONFIG_CFI_PERMISSIVE |kconfig| is not set | kspp | self_protection | FAIL: CONFIG_CC_IS_CLANG is not "y"CONFIG_HW_RANDOM_TPM |kconfig| y | kspp | self_protection | OKCONFIG_DEFAULT_MMAP_MIN_ADDR |kconfig| 65536 | kspp | self_protection | OKCONFIG_IOMMU_DEFAULT_DMA_STRICT |kconfig| y | kspp | self_protection | FAIL: "is not set"CONFIG_IOMMU_DEFAULT_PASSTHROUGH |kconfig| is not set | kspp | self_protection | OKCONFIG_INTEL_IOMMU_DEFAULT_ON |kconfig| y | kspp | self_protection | OKCONFIG_MITIGATION_SLS |kconfig| y | kspp | self_protection | FAIL: is not foundCONFIG_INTEL_IOMMU_SVM |kconfig| y | kspp | self_protection | OKCONFIG_AMD_IOMMU_V2 |kconfig| y | kspp | self_protection | FAIL: "m"CONFIG_SECURITY |kconfig| y |defconfig | security_policy | OKCONFIG_SECURITY_YAMA |kconfig| y | kspp | security_policy | OKCONFIG_SECURITY_LANDLOCK |kconfig| y | kspp | security_policy | OKCONFIG_SECURITY_SELINUX_DISABLE |kconfig| is not set | kspp | security_policy | OKCONFIG_SECURITY_SELINUX_BOOTPARAM |kconfig| is not set | kspp | security_policy | FAIL: "y"CONFIG_SECURITY_SELINUX_DEVELOP |kconfig| is not set | kspp | security_policy | FAIL: "y"CONFIG_SECURITY_WRITABLE_HOOKS |kconfig| is not set | kspp | security_policy | OK: is not foundCONFIG_SECURITY_SELINUX_DEBUG |kconfig| is not set | kspp | security_policy | OK: is not foundCONFIG_SECURITY_SELINUX |kconfig| y |a13xp0p0v | security_policy | OKCONFIG_SECCOMP |kconfig| y |defconfig |cut_attack_surface| OKCONFIG_SECCOMP_FILTER |kconfig| y |defconfig |cut_attack_surface| OKCONFIG_BPF_UNPRIV_DEFAULT_OFF |kconfig| y |defconfig |cut_attack_surface| OKCONFIG_STRICT_DEVMEM |kconfig| y |defconfig |cut_attack_surface| OKCONFIG_X86_INTEL_TSX_MODE_OFF |kconfig| y |defconfig |cut_attack_surface| OKCONFIG_SECURITY_DMESG_RESTRICT |kconfig| y | kspp |cut_attack_surface| OKCONFIG_ACPI_CUSTOM_METHOD |kconfig| is not set | kspp |cut_attack_surface| OKCONFIG_COMPAT_BRK |kconfig| is not set | kspp |cut_attack_surface| OKCONFIG_DEVKMEM |kconfig| is not set | kspp |cut_attack_surface| OK: is not foundCONFIG_BINFMT_MISC |kconfig| is not set | kspp |cut_attack_surface| FAIL: "m"CONFIG_INET_DIAG |kconfig| is not set | kspp |cut_attack_surface| FAIL: "m"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| FAIL: "y"CONFIG_HIBERNATION |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"CONFIG_COMPAT |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| FAIL: "y"CONFIG_X86_X32_ABI |kconfig| is not set | kspp |cut_attack_surface| OK: is not foundCONFIG_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: is not foundCONFIG_X86_MSR |kconfig| is not set | kspp |cut_attack_surface| FAIL: "m"CONFIG_LEGACY_TIOCSTI |kconfig| is not set | kspp |cut_attack_surface| OK: is not foundCONFIG_MODULE_FORCE_LOAD |kconfig| is not set | kspp |cut_attack_surface| OKCONFIG_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| FAIL: "is not set"CONFIG_LDISC_AUTOLOAD |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"CONFIG_X86_VSYSCALL_EMULATION |kconfig| is not set | kspp |cut_attack_surface| FAIL: "y"CONFIG_COMPAT_VDSO |kconfig| is not set | kspp |cut_attack_surface| OKCONFIG_DRM_LEGACY |kconfig| is not set |maintainer|cut_attack_surface| OKCONFIG_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: is not foundCONFIG_NOUVEAU_LEGACY_CTX_SUPPORT |kconfig| is not set |maintainer|cut_attack_surface| OKCONFIG_N_GSM |kconfig| is not set |maintainer|cut_attack_surface| FAIL: "m"CONFIG_ZSMALLOC_STAT |kconfig| is not set | grsec |cut_attack_surface| OKCONFIG_DEBUG_KMEMLEAK |kconfig| is not set | grsec |cut_attack_surface| OKCONFIG_BINFMT_AOUT |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_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| FAIL: "y"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| FAIL: "m"CONFIG_FAIL_FUTEX |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_PUNIT_ATOM_DEBUG |kconfig| is not set | grsec |cut_attack_surface| FAIL: "m"CONFIG_ACPI_CONFIGFS |kconfig| is not set | grsec |cut_attack_surface| FAIL: "m"CONFIG_EDAC_DEBUG |kconfig| is not set | grsec |cut_attack_surface| OKCONFIG_DRM_I915_DEBUG |kconfig| is not set | grsec |cut_attack_surface| OKCONFIG_DVB_C8SECTPFE |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_MTD_SLRAM |kconfig| is not set | grsec |cut_attack_surface| FAIL: "m"CONFIG_MTD_PHRAM |kconfig| is not set | grsec |cut_attack_surface| FAIL: "m"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| OKCONFIG_KCOV |kconfig| is not set | grsec |cut_attack_surface| OKCONFIG_PROVIDE_OHCI1394_DMA_INIT |kconfig| is not set | grsec |cut_attack_surface| OKCONFIG_SUNRPC_DEBUG |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"CONFIG_X86_16BIT |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"CONFIG_BLK_DEV_UBLK |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_SMB_SERVER |kconfig| is not set | grsec |cut_attack_surface| FAIL: "m"CONFIG_XFS_ONLINE_SCRUB_STATS |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_CACHESTAT_SYSCALL |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_PREEMPTIRQ_TRACEPOINTS |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_ENABLE_DEFAULT_TRACERS |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_PROVE_LOCKING |kconfig| is not set | grsec |cut_attack_surface| OKCONFIG_TEST_DEBUG_VIRTUAL |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_MPTCP |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"CONFIG_TLS |kconfig| is not set | grsec |cut_attack_surface| FAIL: "m"CONFIG_TIPC |kconfig| is not set | grsec |cut_attack_surface| FAIL: "m"CONFIG_IP_SCTP |kconfig| is not set | grsec |cut_attack_surface| FAIL: "m"CONFIG_KGDB |kconfig| is not set | grsec |cut_attack_surface| FAIL: "y"CONFIG_PTDUMP_DEBUGFS |kconfig| is not set | grsec |cut_attack_surface| OKCONFIG_X86_PTDUMP |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_DEBUG_CLOSURES |kconfig| is not set | grsec |cut_attack_surface| OK: is not foundCONFIG_BCACHE_CLOSURES_DEBUG |kconfig| is not set | grsec |cut_attack_surface| OKCONFIG_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_KEXEC_FILE |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"CONFIG_CRASH_DUMP |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: "m"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_AIO |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"CONFIG_MAGIC_SYSRQ |kconfig| is not set | clipos |cut_attack_surface| FAIL: "y"CONFIG_MAGIC_SYSRQ_SERIAL |kconfig| is not set |grapheneos|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| OKCONFIG_KPROBES |kconfig| is not set | lockdown |cut_attack_surface| FAIL: "y"CONFIG_BPF_SYSCALL |kconfig| is not set | lockdown |cut_attack_surface| FAIL: "y"CONFIG_MMIOTRACE |kconfig| is not set |a13xp0p0v |cut_attack_surface| FAIL: "y"CONFIG_LIVEPATCH |kconfig| is not set |a13xp0p0v |cut_attack_surface| FAIL: "y"CONFIG_IP_DCCP |kconfig| is not set |a13xp0p0v |cut_attack_surface| FAIL: "m"CONFIG_FTRACE |kconfig| is not set |a13xp0p0v |cut_attack_surface| FAIL: "y"CONFIG_VIDEO_VIVID |kconfig| is not set |a13xp0p0v |cut_attack_surface| FAIL: "m"CONFIG_INPUT_EVBUG |kconfig| is not set |a13xp0p0v |cut_attack_surface| FAIL: "m"CONFIG_CORESIGHT |kconfig| is not set |a13xp0p0v |cut_attack_surface| OK: is not foundCONFIG_XFS_SUPPORT_V4 |kconfig| is not set |a13xp0p0v |cut_attack_surface| FAIL: "y"CONFIG_BLK_DEV_WRITE_MOUNTED |kconfig| is not set |a13xp0p0v |cut_attack_surface| OK: is not foundCONFIG_FAULT_INJECTION |kconfig| is not set |a13xp0p0v |cut_attack_surface| OKCONFIG_ARM_PTDUMP_DEBUGFS |kconfig| is not set |a13xp0p0v |cut_attack_surface| OK: is not foundCONFIG_ARM_PTDUMP |kconfig| is not set |a13xp0p0v |cut_attack_surface| OK: is not foundCONFIG_LKDTM |kconfig| is not set |a13xp0p0v |cut_attack_surface| OKCONFIG_TRIM_UNUSED_KSYMS |kconfig| y |a13xp0p0v |cut_attack_surface| FAIL: "is not set"CONFIG_COREDUMP |kconfig| is not set | clipos | harden_userspace | FAIL: "y"CONFIG_ARCH_MMAP_RND_BITS |kconfig| 32 |a13xp0p0v | harden_userspace | FAIL: "28"CONFIG_X86_USER_SHADOW_STACK |kconfig| y | kspp | harden_userspace | FAIL: is not foundnosmep |cmdline| is not set |defconfig | self_protection | OK: is not foundnosmap |cmdline| is not set |defconfig | self_protection | OK: is not foundnokaslr |cmdline| is not set |defconfig | self_protection | OK: is not foundnopti |cmdline| is not set |defconfig | self_protection | OK: is not foundnospectre_v1 |cmdline| is not set |defconfig | self_protection | OK: is not foundnospectre_v2 |cmdline| is not set |defconfig | self_protection | OK: is not foundnospectre_bhb |cmdline| is not set |defconfig | self_protection | OK: is not foundnospec_store_bypass_disable |cmdline| is not set |defconfig | self_protection | OK: is not founddis_ucode_ldr |cmdline| is not set |defconfig | self_protection | OK: is not foundarm64.nobti |cmdline| is not set |defconfig | self_protection | OK: is not foundarm64.nopauth |cmdline| is not set |defconfig | self_protection | OK: is not foundarm64.nomte |cmdline| is not set |defconfig | self_protection | OK: is not foundspectre_v2 |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundspectre_v2_user |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundspectre_bhi |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundspec_store_bypass_disable |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundl1tf |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundmds |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundtsx_async_abort |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundsrbds |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundmmio_stale_data |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundretbleed |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundspec_rstack_overflow |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundgather_data_sampling |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundreg_file_data_sampling |cmdline| is not off |defconfig | self_protection | FAIL: is off, not foundrodata |cmdline| on |defconfig | self_protection | OK: rodata is not foundslab_merge |cmdline| is not set | kspp | self_protection | OK: is not foundslub_merge |cmdline| is not set | kspp | self_protection | OK: is not foundpage_alloc.shuffle |cmdline| 1 | kspp | self_protection | FAIL: is not foundcfi |cmdline| kcfi | kspp | self_protection | FAIL: is not foundslab_nomerge |cmdline| is present | kspp | self_protection | FAIL: is not presentinit_on_alloc |cmdline| 1 | kspp | self_protection | OK: CONFIG_INIT_ON_ALLOC_DEFAULT_ON is "y"init_on_free |cmdline| 1 | kspp | self_protection | FAIL: is not foundhardened_usercopy |cmdline| 1 | kspp | self_protection | OK: CONFIG_HARDENED_USERCOPY is "y"slab_common.usercopy_fallback |cmdline| is not set | kspp | self_protection | OK: is not foundkfence.sample_interval |cmdline| 100 | kspp | self_protection | FAIL: is not foundiommu.strict |cmdline| 1 | kspp | self_protection | FAIL: is not foundiommu.passthrough |cmdline| 0 | kspp | self_protection | OK: CONFIG_IOMMU_DEFAULT_PASSTHROUGH is "is not set"randomize_kstack_offset |cmdline| 1 | kspp | self_protection | OK: CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT is "y"mitigations |cmdline| auto,nosmt | kspp | self_protection | FAIL: is not foundpti |cmdline| on | kspp | self_protection | FAIL: is not foundiommu |cmdline| force | clipos | self_protection | FAIL: is not foundtsx |cmdline| off |defconfig |cut_attack_surface| OK: CONFIG_X86_INTEL_TSX_MODE_OFF is "y"nosmt |cmdline| is present | kspp |cut_attack_surface| FAIL: is not presentvsyscall |cmdline| none | kspp |cut_attack_surface| FAIL: is not foundvdso32 |cmdline| 0 | kspp |cut_attack_surface| OK: CONFIG_COMPAT_VDSO is "is not set"debugfs |cmdline| off | grsec |cut_attack_surface| FAIL: is not foundsysrq_always_enabled |cmdline| is not set |grapheneos|cut_attack_surface| OK: is not foundbdev_allow_write_mounted |cmdline| 0 |a13xp0p0v |cut_attack_surface| OK: CONFIG_BLK_DEV_WRITE_MOUNTED is not foundia32_emulation |cmdline| 0 |a13xp0p0v |cut_attack_surface| FAIL: is not foundnorandmaps |cmdline| is not set |defconfig | harden_userspace | OK: is not foundnet.core.bpf_jit_harden |sysctl | 2 | kspp | self_protection | FAIL: "0"kernel.oops_limit |sysctl | 100 |a13xp0p0v | self_protection | FAIL: is not foundkernel.warn_limit |sysctl | 100 |a13xp0p0v | self_protection | FAIL: is not foundkernel.dmesg_restrict |sysctl | 1 | kspp |cut_attack_surface| OKkernel.perf_event_paranoid |sysctl | 3 | kspp |cut_attack_surface| FAIL: "4"user.max_user_namespaces |sysctl | 0 | kspp |cut_attack_surface| FAIL: "31231"dev.tty.ldisc_autoload |sysctl | 0 | kspp |cut_attack_surface| FAIL: "1"kernel.kptr_restrict |sysctl | 2 | kspp |cut_attack_surface| FAIL: "1"dev.tty.legacy_tiocsti |sysctl | 0 | kspp |cut_attack_surface| FAIL: is not foundkernel.kexec_load_disabled |sysctl | 1 | kspp |cut_attack_surface| FAIL: "0"kernel.unprivileged_bpf_disabled |sysctl | 1 | kspp |cut_attack_surface| FAIL: "2"vm.unprivileged_userfaultfd |sysctl | 0 | kspp |cut_attack_surface| OKkernel.modules_disabled |sysctl | 1 | kspp |cut_attack_surface| FAIL: "0"kernel.io_uring_disabled |sysctl | 2 | grsec |cut_attack_surface| FAIL: is not foundkernel.sysrq |sysctl | 0 |a13xp0p0v |cut_attack_surface| FAIL: "176"fs.protected_symlinks |sysctl | 1 | kspp | harden_userspace | OKfs.protected_hardlinks |sysctl | 1 | kspp | harden_userspace | OKfs.protected_fifos |sysctl | 2 | kspp | harden_userspace | FAIL: "1"fs.protected_regular |sysctl | 2 | kspp | harden_userspace | OKfs.suid_dumpable |sysctl | 0 | kspp | harden_userspace | FAIL: "2"kernel.randomize_va_space |sysctl | 2 | kspp | harden_userspace | OKkernel.yama.ptrace_scope |sysctl | 3 | kspp | harden_userspace | FAIL: "1"[+] Config check is finished: 'OK' - 135 / 'FAIL' - 158
生成带有安全强化选项的 Kconfig 代码段
通过该-g参数，该工具会生成一个 Kconfig 代码段，其中包含针对所选微架构的安全强化选项。
此 Kconfig 代码段可以与现有的 Linux 内核配置合并：
$ ./bin/kernel-hardening-checker -g X86_64 > /tmp/fragment$ cd ~/linux-src/$ ./scripts/kconfig/merge_config.sh .config /tmp/fragmentUsing .config as baseMerging /tmp/fragmentValue of CONFIG_BUG_ON_DATA_CORRUPTION is redefined by fragment /tmp/fragment:Previous value:New value: CONFIG_BUG_ON_DATA_CORRUPTION=y...
本项目的开发与发布遵循GPL-3.0开源许可协议。
kernel-hardening-checker：
https://github.com/daniel2005d/mapXplore
https://kspp.github.io/Recommended_Settings https://grsecurity.net/ https://docs.clip-os.org/clipos/kernel.html#configuration https://grapheneos.org/features https://lwn.net/Articles/791863/
