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kernel-hardening-checker：一款针对Linux内核的安全加固工具
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kernel-hardening-checker：一款针对Linux内核的安全加固工具
关于kernel-hardening-checker
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。
功能介绍
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）
支持的微架构
1、X86_64
2、X86_32
3、ARM64
4、ARM
工具安装
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-checker python setup.py
pip安装
pip install git+https://github.com/a13xp0p0v/kernel-hardening-checker
工具使用
usage: kernel-hardening-checker [-h] [--version] [-m {verbose,json,show_ok,show_fail}]
[-c CONFIG] [-l CMDLINE] [-s SYSCTL] [-v KERNEL_VERSION]
[-p {X86_64,X86_32,ARM64,ARM}]
[-g {X86_64,X86_32,ARM64,ARM}]
A tool for checking the security hardening options of the Linux kernel
options:
-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 | OK CONFIG_SLUB_DEBUG |kconfig| y |defconfig | self_protection | OK CONFIG_THREAD_INFO_IN_TASK |kconfig| y |defconfig | self_protection | OK CONFIG_IOMMU_SUPPORT |kconfig| y |defconfig | self_protection | OK CONFIG_STACKPROTECTOR |kconfig| y |defconfig | self_protection | OK CONFIG_STACKPROTECTOR_STRONG |kconfig| y |defconfig | self_protection | OK 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, 4, 208) CONFIG_INIT_STACK_ALL_ZERO |kconfig| y |defconfig | self_protection | FAIL: is not found CONFIG_CPU_MITIGATIONS |kconfig| y |defconfig | self_protection | FAIL: is not found CONFIG_RANDOMIZE_BASE |kconfig| y |defconfig | self_protection | OK CONFIG_VMAP_STACK |kconfig| y |defconfig | self_protection | OK CONFIG_DEBUG_WX |kconfig| y |defconfig | self_protection | OK CONFIG_WERROR |kconfig| y |defconfig | self_protection | FAIL: "is not set" CONFIG_X86_MCE |kconfig| y |defconfig | self_protection | OK CONFIG_SYN_COOKIES |kconfig| y |defconfig | self_protection | OK CONFIG_MICROCODE |kconfig| y |defconfig | self_protection | OK CONFIG_MICROCODE_INTEL |kconfig| y |defconfig | self_protection | OK CONFIG_MICROCODE_AMD |kconfig| y |defconfig | self_protection | OK CONFIG_X86_SMAP |kconfig| y |defconfig | self_protection | OK CONFIG_X86_UMIP |kconfig| y |defconfig | self_protection | OK CONFIG_X86_MCE_INTEL |kconfig| y |defconfig | self_protection | OK CONFIG_X86_MCE_AMD |kconfig| y |defconfig | self_protection | OK CONFIG_MITIGATION_RETPOLINE |kconfig| y |defconfig | self_protection | OK: CONFIG_RETPOLINE is "y" CONFIG_MITIGATION_RFDS |kconfig| y |defconfig | self_protection | FAIL: is not found CONFIG_MITIGATION_SPECTRE_BHI |kconfig| y |defconfig | self_protection | FAIL: is not found CONFIG_RANDOMIZE_MEMORY |kconfig| y |defconfig | self_protection | OK CONFIG_X86_KERNEL_IBT |kconfig| y |defconfig | self_protection | FAIL: is not found CONFIG_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 found CONFIG_INTEL_IOMMU |kconfig| y |defconfig | self_protection | OK CONFIG_AMD_IOMMU |kconfig| y |defconfig | self_protection | OK CONFIG_LIST_HARDENED |kconfig| y | kspp | self_protection | FAIL: is not found CONFIG_RANDOM_KMALLOC_CACHES |kconfig| y | kspp | self_protection | FAIL: is not found CONFIG_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 | 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 | 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 | OK CONFIG_STATIC_USERMODEHELPER |kconfig| y | kspp | self_protection | FAIL: "is not set" CONFIG_SCHED_CORE |kconfig| y | kspp | self_protection | OK CONFIG_SECURITY_LOCKDOWN_LSM |kconfig| y | kspp | self_protection | OK CONFIG_SECURITY_LOCKDOWN_LSM_EARLY |kconfig| y | kspp | self_protection | OK CONFIG_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 | OK CONFIG_KFENCE |kconfig| y | kspp | self_protection | OK CONFIG_KFENCE_SAMPLE_INTERVAL |kconfig| 100 | kspp | self_protection | FAIL: "0" CONFIG_RANDSTRUCT_FULL |kconfig| y | kspp | self_protection | FAIL: is not found CONFIG_HARDENED_USERCOPY |kconfig| y | kspp | self_protection | OK CONFIG_HARDENED_USERCOPY_FALLBACK |kconfig| is not set | kspp | self_protection | OK CONFIG_HARDENED_USERCOPY_PAGESPAN |kconfig| is not set | kspp | self_protection | OK CONFIG_GCC_PLUGIN_LATENT_ENTROPY |kconfig| y | kspp | self_protection | FAIL: is 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_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 | OK CONFIG_UBSAN_BOUNDS |kconfig| y | kspp | self_protection | OK CONFIG_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 | OK CONFIG_GCC_PLUGIN_STACKLEAK |kconfig| y | kspp | self_protection | FAIL: is not found CONFIG_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 | OK CONFIG_PAGE_TABLE_CHECK |kconfig| y | kspp | self_protection | FAIL: is not found CONFIG_PAGE_TABLE_CHECK_ENFORCED |kconfig| y | kspp | self_protection | FAIL: is not found CONFIG_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 | OK CONFIG_DEFAULT_MMAP_MIN_ADDR |kconfig| 65536 | kspp | self_protection | OK CONFIG_IOMMU_DEFAULT_DMA_STRICT |kconfig| y | kspp | self_protection | FAIL: "is not set" CONFIG_IOMMU_DEFAULT_PASSTHROUGH |kconfig| is not set | kspp | self_protection | OK CONFIG_INTEL_IOMMU_DEFAULT_ON |kconfig| y | kspp | self_protection | OK CONFIG_MITIGATION_SLS |kconfig| y | kspp | self_protection | FAIL: is not found CONFIG_INTEL_IOMMU_SVM |kconfig| y | kspp | self_protection | OK CONFIG_AMD_IOMMU_V2 |kconfig| y | kspp | self_protection | FAIL: "m" CONFIG_SECURITY |kconfig| y |defconfig | security_policy | OK CONFIG_SECURITY_YAMA |kconfig| y | kspp | security_policy | OK CONFIG_SECURITY_LANDLOCK |kconfig| y | kspp | security_policy | OK CONFIG_SECURITY_SELINUX_DISABLE |kconfig| is not set | kspp | security_policy | OK CONFIG_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 found CONFIG_SECURITY_SELINUX_DEBUG |kconfig| is not set | kspp | security_policy | OK: is not found CONFIG_SECURITY_SELINUX |kconfig| y |a13xp0p0v | security_policy | OK CONFIG_SECCOMP |kconfig| y |defconfig |cut_attack_surface| OK CONFIG_SECCOMP_FILTER |kconfig| y |defconfig |cut_attack_surface| OK CONFIG_BPF_UNPRIV_DEFAULT_OFF |kconfig| y |defconfig |cut_attack_surface| OK CONFIG_STRICT_DEVMEM |kconfig| y |defconfig |cut_attack_surface| OK CONFIG_X86_INTEL_TSX_MODE_OFF |kconfig| y |defconfig |cut_attack_surface| OK CONFIG_SECURITY_DMESG_RESTRICT |kconfig| y | kspp |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: is not found 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: "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 found 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: is not found CONFIG_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 found CONFIG_MODULE_FORCE_LOAD |kconfig| is not set | kspp |cut_attack_surface| OK 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| 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| 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: is not found CONFIG_NOUVEAU_LEGACY_CTX_SUPPORT |kconfig| is not set |maintainer|cut_attack_surface| OK CONFIG_N_GSM |kconfig| is not set |maintainer|cut_attack_surface| FAIL: "m" CONFIG_ZSMALLOC_STAT |kconfig| is not set | grsec |cut_attack_surface| OK CONFIG_DEBUG_KMEMLEAK |kconfig| is not set | grsec |cut_attack_surface| OK CONFIG_BINFMT_AOUT |kconfig| is not set | grsec |cut_attack_surface| OK: is 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| 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 found CONFIG_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| OK CONFIG_DRM_I915_DEBUG |kconfig| is not set | grsec |cut_attack_surface| OK CONFIG_DVB_C8SECTPFE |kconfig| is not set | grsec |cut_attack_surface| OK: is not found CONFIG_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| OK CONFIG_KCOV |kconfig| is not set | grsec |cut_attack_surface| OK CONFIG_PROVIDE_OHCI1394_DMA_INIT |kconfig| is not set | grsec |cut_attack_surface| OK CONFIG_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 found CONFIG_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 found CONFIG_CACHESTAT_SYSCALL |kconfig| is not set | grsec |cut_attack_surface| OK: is not found CONFIG_PREEMPTIRQ_TRACEPOINTS |kconfig| is not set | grsec |cut_attack_surface| OK: is not found CONFIG_ENABLE_DEFAULT_TRACERS |kconfig| is not set | grsec |cut_attack_surface| OK: is not found CONFIG_PROVE_LOCKING |kconfig| is not set | grsec |cut_attack_surface| OK CONFIG_TEST_DEBUG_VIRTUAL |kconfig| is not set | grsec |cut_attack_surface| OK: is not found CONFIG_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| OK CONFIG_X86_PTDUMP |kconfig| is not set | grsec |cut_attack_surface| OK: is not found CONFIG_DEBUG_CLOSURES |kconfig| is not set | grsec |cut_attack_surface| OK: is not found CONFIG_BCACHE_CLOSURES_DEBUG |kconfig| is not set | grsec |cut_attack_surface| OK 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_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| OK CONFIG_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 found CONFIG_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 found CONFIG_FAULT_INJECTION |kconfig| is not set |a13xp0p0v |cut_attack_surface| OK CONFIG_ARM_PTDUMP_DEBUGFS |kconfig| is not set |a13xp0p0v |cut_attack_surface| OK: is not found CONFIG_ARM_PTDUMP |kconfig| is not set |a13xp0p0v |cut_attack_surface| OK: is not found CONFIG_LKDTM |kconfig| is not set |a13xp0p0v |cut_attack_surface| OK CONFIG_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 found nosmep |cmdline| is not set |defconfig | self_protection | OK: is not found nosmap |cmdline| is not set |defconfig | self_protection | OK: is not found nokaslr |cmdline| is not set |defconfig | self_protection | OK: is not found nopti |cmdline| is not set |defconfig | self_protection | OK: is not found nospectre_v1 |cmdline| is not set |defconfig | self_protection | OK: is not found nospectre_v2 |cmdline| is not set |defconfig | self_protection | OK: is not found nospectre_bhb |cmdline| is not set |defconfig | self_protection | OK: is not found nospec_store_bypass_disable |cmdline| is not set |defconfig | self_protection | OK: is not found dis_ucode_ldr |cmdline| is not set |defconfig | self_protection | OK: is not found arm64.nobti |cmdline| is not set |defconfig | self_protection | OK: is not found arm64.nopauth |cmdline| is not set |defconfig | self_protection | OK: is not found arm64.nomte |cmdline| is not set |defconfig | self_protection | OK: is not found spectre_v2 |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found spectre_v2_user |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found spectre_bhi |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found spec_store_bypass_disable |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found l1tf |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found mds |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found tsx_async_abort |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found srbds |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found mmio_stale_data |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found retbleed |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found spec_rstack_overflow |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found gather_data_sampling |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found reg_file_data_sampling |cmdline| is not off |defconfig | self_protection | FAIL: is off, not found rodata |cmdline| on |defconfig | self_protection | OK: rodata is not found slab_merge |cmdline| is not set | kspp | self_protection | OK: is not found slub_merge |cmdline| is not set | kspp | self_protection | OK: is not found page_alloc.shuffle |cmdline| 1 | kspp | self_protection | FAIL: is not found cfi |cmdline| kcfi | kspp | self_protection | FAIL: is not found slab_nomerge |cmdline| is present | kspp | self_protection | FAIL: is not present init_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 found hardened_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 found kfence.sample_interval |cmdline| 100 | kspp | self_protection | FAIL: is not found iommu.strict |cmdline| 1 | kspp | self_protection | FAIL: is not found iommu.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 found pti |cmdline| on | kspp | self_protection | FAIL: is not found iommu |cmdline| force | clipos | self_protection | FAIL: is not found tsx |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 present vsyscall |cmdline| none | kspp |cut_attack_surface| FAIL: is not found vdso32 |cmdline| 0 | kspp |cut_attack_surface| OK: CONFIG_COMPAT_VDSO is "is not set" debugfs |cmdline| off | grsec |cut_attack_surface| FAIL: is not found sysrq_always_enabled |cmdline| is not set |grapheneos|cut_attack_surface| OK: is not found bdev_allow_write_mounted |cmdline| 0 |a13xp0p0v |cut_attack_surface| OK: CONFIG_BLK_DEV_WRITE_MOUNTED is not found ia32_emulation |cmdline| 0 |a13xp0p0v |cut_attack_surface| FAIL: is not found norandmaps |cmdline| is not set |defconfig | harden_userspace | OK: is not found net.core.bpf_jit_harden |sysctl | 2 | kspp | self_protection | FAIL: "0" kernel.oops_limit |sysctl | 100 |a13xp0p0v | self_protection | FAIL: is not found kernel.warn_limit |sysctl | 100 |a13xp0p0v | self_protection | FAIL: is not found kernel.dmesg_restrict |sysctl | 1 | kspp |cut_attack_surface| OK kernel.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 found kernel.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| OK kernel.modules_disabled |sysctl | 1 | kspp |cut_attack_surface| FAIL: "0" kernel.io_uring_disabled |sysctl | 2 | grsec |cut_attack_surface| FAIL: is not found kernel.sysrq |sysctl | 0 |a13xp0p0v |cut_attack_surface| FAIL: "176" fs.protected_symlinks |sysctl | 1 | kspp | harden_userspace | OK fs.protected_hardlinks |sysctl | 1 | kspp | harden_userspace | OK fs.protected_fifos |sysctl | 2 | kspp | harden_userspace | FAIL: "1" fs.protected_regular |sysctl | 2 | kspp | harden_userspace | OK fs.suid_dumpable |sysctl | 0 | kspp | harden_userspace | FAIL: "2" kernel.randomize_va_space |sysctl | 2 | kspp | harden_userspace | OK kernel.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/fragment Using .config as base Merging /tmp/fragment Value of CONFIG_BUG_ON_DATA_CORRUPTION is redefined by fragment /tmp/fragment: Previous value: # CONFIG_BUG_ON_DATA_CORRUPTION is not set New value: CONFIG_BUG_ON_DATA_CORRUPTION=y ...
许可证协议
本项目的开发与发布遵循GPL-3.0开源许可协议。
项目地址
kernel-hardening-checker：【GitHub传送门】
参考资料
https://kspp.github.io/Recommended_Settings
https://docs.clip-os.org/clipos/kernel.html#configuration
免责声明
1.一般免责声明：本文所提供的技术信息仅供参考，不构成任何专业建议。读者应根据自身情况谨慎使用且应遵守《中华人民共和国网络安全法》，作者及发布平台不对因使用本文信息而导致的任何直接或间接责任或损失负责。
2. 适用性声明：文中技术内容可能不适用于所有情况或系统，在实际应用前请充分测试和评估。若因使用不当造成的任何问题，相关方不承担责任。
3. 更新声明：技术发展迅速，文章内容可能存在滞后性。读者需自行判断信息的时效性，因依据过时内容产生的后果，作者及发布平台不承担责任。
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