207 lines
18 KiB
Markdown
207 lines
18 KiB
Markdown
### Steps to create
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1. Set the KVER variable to which version you want to obtain from Anthraxx's linux-hardened repository
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2. Run `bash kernel_build.sh`
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### Steps to import/configure release
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- Built into PlagueOS installer
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### Troubleshooting:
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- `lsinitrd -v /boot/initramfs-5.10."$KVER"-hardened1_1.img`
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#### Additional Resources:
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- https://www.kernel.org/doc/html/v5.10/
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- https://github.com/Whonix/hardened-kernel
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- https://docs.clip-os.org/clipos/kernel.html
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- https://github.com/anthraxx/linux-hardened
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- https://kernsec.org/wiki/index.php/Kernel_Self_Protection_Project
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- https://notabug.org/anonymous-lestat/Void-Hardened-Kernel
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- https://madaidans-insecurities.github.io/guides/linux-hardening.html#kernel
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### Trimming Efforts
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- While linux-hardened security patchsets along with kernel configurations are notable for this kernel project, the core purpose was to practice minimalism by reducing the size of the linux kernel, thereby cutting attack surface. This is not a trivial thing to record, therefore we are displaying the size purely as a point of comparison.
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| |PlagueOS (plague-kernel) |Whonix (LTS)|
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|--- | --- | ---|
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|Size (compressed)|159.2 MB |285.6 MB|
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### Current kconfig-hardened-check results
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#### Successes
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Option | Desired Value | Source | Reason | Result |
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|--- | --- | --- | --- | --- |
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CONFIG_BUG | y |defconfig | self_protection | OK
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CONFIG_GCC_PLUGINS | y |defconfig | self_protection | OK
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CONFIG_STACKPROTECTOR_STRONG | y |defconfig | self_protection | OK
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CONFIG_STRICT_KERNEL_RWX | y |defconfig | self_protection | OK
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CONFIG_STRICT_MODULE_RWX | y |defconfig | self_protection | OK
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CONFIG_REFCOUNT_FULL | y |defconfig | self_protection | OK: version >= 5.5
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CONFIG_IOMMU_SUPPORT | y |defconfig | self_protection | OK
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CONFIG_RANDOMIZE_BASE | y |defconfig | self_protection | OK
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CONFIG_THREAD_INFO_IN_TASK | y |defconfig | self_protection | OK
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CONFIG_VMAP_STACK | y |defconfig | self_protection | OK
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CONFIG_MICROCODE | y |defconfig | self_protection | OK
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CONFIG_RETPOLINE | y |defconfig | self_protection | OK
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CONFIG_X86_SMAP | y |defconfig | self_protection | OK
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CONFIG_SYN_COOKIES | y |defconfig | self_protection | OK
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CONFIG_PAGE_TABLE_ISOLATION | y |defconfig | self_protection | OK
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CONFIG_RANDOMIZE_MEMORY | y |defconfig | self_protection | OK
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CONFIG_INTEL_IOMMU | y |defconfig | self_protection | OK
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CONFIG_AMD_IOMMU | y |defconfig | self_protection | OK
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CONFIG_SECURITY_DMESG_RESTRICT | y | kspp | self_protection | OK
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CONFIG_BUG_ON_DATA_CORRUPTION | y | kspp | self_protection | OK
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CONFIG_DEBUG_WX | y | kspp | self_protection | OK
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CONFIG_SCHED_STACK_END_CHECK | y | kspp | self_protection | OK
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CONFIG_SLAB_FREELIST_HARDENED | y | kspp | self_protection | OK
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CONFIG_SLAB_FREELIST_RANDOM | y | kspp | self_protection | OK
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CONFIG_SHUFFLE_PAGE_ALLOCATOR | y | kspp | self_protection | OK
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CONFIG_FORTIFY_SOURCE | y | kspp | self_protection | OK
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CONFIG_DEBUG_LIST | y | kspp | self_protection | OK
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CONFIG_DEBUG_SG | y | kspp | self_protection | OK
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CONFIG_DEBUG_CREDENTIALS | y | kspp | self_protection | OK
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CONFIG_DEBUG_NOTIFIERS | y | kspp | self_protection | OK
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CONFIG_INIT_ON_ALLOC_DEFAULT_ON | y | kspp | self_protection | OK
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CONFIG_GCC_PLUGIN_LATENT_ENTROPY | y | kspp | self_protection | OK
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CONFIG_GCC_PLUGIN_RANDSTRUCT | y | kspp | self_protection | OK
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CONFIG_HARDENED_USERCOPY | y | kspp | self_protection | OK
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CONFIG_HARDENED_USERCOPY_FALLBACK | is not set | kspp | self_protection | OK
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CONFIG_HARDENED_USERCOPY_PAGESPAN | is not set | kspp | self_protection | OK
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CONFIG_MODULE_SIG | y | kspp | self_protection | OK
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CONFIG_MODULE_SIG_ALL | y | kspp | self_protection | OK
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CONFIG_MODULE_SIG_SHA512 | y | kspp | self_protection | OK
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CONFIG_MODULE_SIG_FORCE | y | kspp | self_protection | OK
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CONFIG_INIT_STACK_ALL_ZERO | y | kspp | self_protection | OK: CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL "y"
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CONFIG_INIT_ON_FREE_DEFAULT_ON | y | kspp | self_protection | OK
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CONFIG_GCC_PLUGIN_STACKLEAK | y | kspp | self_protection | OK
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CONFIG_DEFAULT_MMAP_MIN_ADDR | 65536 | kspp | self_protection | OK
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CONFIG_DEBUG_VIRTUAL | y | clipos | self_protection | OK
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CONFIG_EFI_DISABLE_PCI_DMA | y | clipos | self_protection | OK
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CONFIG_SLAB_MERGE_DEFAULT | is not set | clipos | self_protection | OK
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CONFIG_RANDOM_TRUST_BOOTLOADER | is not set | clipos | self_protection | OK
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CONFIG_RANDOM_TRUST_CPU | is not set | clipos | self_protection | OK
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CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE | is not set | clipos | self_protection | OK
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CONFIG_STACKLEAK_METRICS | is not set | clipos | self_protection | OK
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CONFIG_STACKLEAK_RUNTIME_DISABLE | is not set | clipos | self_protection | OK
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CONFIG_INTEL_IOMMU_DEFAULT_ON | y | clipos | self_protection | OK
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CONFIG_INTEL_IOMMU_SVM | y | clipos | self_protection | OK
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CONFIG_RESET_ATTACK_MITIGATION | y | my | self_protection | OK
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CONFIG_AMD_IOMMU_V2 | y | my | self_protection | OK
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CONFIG_SECURITY | y |defconfig | security_policy | OK
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CONFIG_SECURITY_YAMA | y | kspp | security_policy | OK
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CONFIG_SECURITY_WRITABLE_HOOKS | is not set | my | security_policy | OK: not found
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CONFIG_SECURITY_LOCKDOWN_LSM | y | clipos | security_policy | OK
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CONFIG_SECURITY_LOCKDOWN_LSM_EARLY | y | clipos | security_policy | OK
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CONFIG_LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY| y | clipos | security_policy | OK
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CONFIG_SECURITY_SAFESETID | y | my | security_policy | OK
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CONFIG_SECCOMP | y |defconfig | cut_attack_surface | OK
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CONFIG_SECCOMP_FILTER | y |defconfig | cut_attack_surface | OK
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CONFIG_STRICT_DEVMEM | y |defconfig | cut_attack_surface | OK: CONFIG_DEVMEM "is not set"
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CONFIG_ACPI_CUSTOM_METHOD | is not set | kspp | cut_attack_surface | OK: not found
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CONFIG_COMPAT_BRK | is not set | kspp | cut_attack_surface | OK
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CONFIG_DEVKMEM | is not set | kspp | cut_attack_surface | OK
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CONFIG_COMPAT_VDSO | is not set | kspp | cut_attack_surface | OK: not found
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CONFIG_BINFMT_MISC | is not set | kspp | cut_attack_surface | OK
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CONFIG_INET_DIAG | is not set | kspp | cut_attack_surface | OK
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CONFIG_KEXEC | is not set | kspp | cut_attack_surface | OK
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CONFIG_PROC_KCORE | is not set | kspp | cut_attack_surface | OK
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CONFIG_LEGACY_PTYS | is not set | kspp | cut_attack_surface | OK
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CONFIG_HIBERNATION | is not set | kspp | cut_attack_surface | OK
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CONFIG_IA32_EMULATION | is not set | kspp | cut_attack_surface | OK
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CONFIG_X86_X32 | is not set | kspp | cut_attack_surface | OK
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CONFIG_MODIFY_LDT_SYSCALL | is not set | kspp | cut_attack_surface | OK
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CONFIG_OABI_COMPAT | is not set | kspp | cut_attack_surface | OK: not found
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CONFIG_DEVMEM | is not set | kspp | cut_attack_surface | OK
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CONFIG_IO_STRICT_DEVMEM | y | kspp | cut_attack_surface | OK: CONFIG_DEVMEM "is not set"
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CONFIG_LEGACY_VSYSCALL_NONE | y | kspp | cut_attack_surface | OK
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CONFIG_ZSMALLOC_STAT | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_PAGE_OWNER | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_DEBUG_KMEMLEAK | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_BINFMT_AOUT | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_KPROBE_EVENTS | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_UPROBE_EVENTS | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_GENERIC_TRACER | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_FUNCTION_TRACER | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_STACK_TRACER | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_HIST_TRIGGERS | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_BLK_DEV_IO_TRACE | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_PROC_VMCORE | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_PROC_PAGE_MONITOR | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_USELIB | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_CHECKPOINT_RESTORE | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_USERFAULTFD | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_HWPOISON_INJECT | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_MEM_SOFT_DIRTY | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_DEVPORT | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_DEBUG_FS | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_NOTIFIER_ERROR_INJECTION | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_FAIL_FUTEX | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_PUNIT_ATOM_DEBUG | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_ACPI_CONFIGFS | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_EDAC_DEBUG | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_DRM_I915_DEBUG | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_BCACHE_CLOSURES_DEBUG | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_DVB_C8SECTPFE | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_MTD_SLRAM | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_MTD_PHRAM | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_IO_URING | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_RSEQ | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_LATENCYTOP | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_KCOV | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_PROVIDE_OHCI1394_DMA_INIT | is not set |grsecurity| cut_attack_surface | OK
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CONFIG_SUNRPC_DEBUG | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_PTDUMP_DEBUGFS | is not set |grsecurity| cut_attack_surface | OK: not found
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CONFIG_DRM_LEGACY | is not set |maintainer| cut_attack_surface | OK
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CONFIG_BLK_DEV_FD | is not set |maintainer| cut_attack_surface | OK
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CONFIG_AIO | is not set |grapheneos| cut_attack_surface | OK
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CONFIG_STAGING | is not set | clipos | cut_attack_surface | OK
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CONFIG_KSM | is not set | clipos | cut_attack_surface | OK
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CONFIG_KALLSYMS | is not set | clipos | cut_attack_surface | OK
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CONFIG_X86_VSYSCALL_EMULATION | is not set | clipos | cut_attack_surface | OK
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CONFIG_KEXEC_FILE | is not set | clipos | cut_attack_surface | OK
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CONFIG_USER_NS | is not set | clipos | cut_attack_surface | OK
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CONFIG_X86_MSR | is not set | clipos | cut_attack_surface | OK
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CONFIG_X86_IOPL_IOPERM | is not set | clipos | cut_attack_surface | OK
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CONFIG_ACPI_TABLE_UPGRADE | is not set | clipos | cut_attack_surface | OK
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CONFIG_EFI_CUSTOM_SSDT_OVERLAYS | is not set | clipos | cut_attack_surface | OK
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CONFIG_LDISC_AUTOLOAD | is not set | clipos | cut_attack_surface | OK
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CONFIG_X86_INTEL_TSX_MODE_OFF | y | clipos | cut_attack_surface | OK
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CONFIG_EFI_TEST | is not set | lockdown | cut_attack_surface | OK
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CONFIG_MMIOTRACE_TEST | is not set | lockdown | cut_attack_surface | OK: not found
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CONFIG_KPROBES | is not set | lockdown | cut_attack_surface | OK
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CONFIG_TRIM_UNUSED_KSYMS | y | my | cut_attack_surface | OK
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CONFIG_MMIOTRACE | is not set | my | cut_attack_surface | OK: not found
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CONFIG_LIVEPATCH | is not set | my | cut_attack_surface | OK: not found
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CONFIG_IP_DCCP | is not set | my | cut_attack_surface | OK
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CONFIG_FTRACE | is not set | my | cut_attack_surface | OK
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CONFIG_VIDEO_VIVID | is not set | my | cut_attack_surface | OK: not found
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CONFIG_INPUT_EVBUG | is not set | my | cut_attack_surface | OK
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CONFIG_INTEGRITY | y |defconfig |userspace_hardening | OK
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CONFIG_ARCH_MMAP_RND_BITS | 32 | clipos |userspace_hardening | OK
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CONFIG_IP_SCTP | is not set | my | cut_attack_surface | OK
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#### Fails
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Option | Desired Value | Source | Reason | Result |
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|--- | --- | --- | --- | --- |
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CONFIG_SLUB_DEBUG | y |defconfig | self_protection | FAIL: "is not set"
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CONFIG_X86_UMIP | y |defconfig | self_protection | FAIL: "is not set"
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CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT | y | kspp | self_protection | FAIL: not found
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CONFIG_UBSAN_BOUNDS | y |maintainer| self_protection | FAIL: not found
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CONFIG_UBSAN_SANITIZE_ALL | y |maintainer| self_protection | FAIL: CONFIG_UBSAN_BOUNDS not "y"
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CONFIG_UBSAN_TRAP | y |maintainer| self_protection | FAIL: CONFIG_UBSAN_BOUNDS not "y"
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CONFIG_STATIC_USERMODEHELPER | y | clipos | self_protection | FAIL: "is not set"
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CONFIG_SECURITY_LOADPIN | y | my | security_policy | FAIL: "is not set"
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CONFIG_SECURITY_LOADPIN_ENFORCE | y | my | security_policy | FAIL: CONFIG_SECURITY_LOADPIN not "y"
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CONFIG_MODULES | is not set | kspp | cut_attack_surface | FAIL: "y"
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CONFIG_KCMP | is not set |grsecurity| cut_attack_surface | FAIL: "y"
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CONFIG_FB | is not set |maintainer| cut_attack_surface | FAIL: "y"
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CONFIG_VT | is not set |maintainer| cut_attack_surface | FAIL: "y"
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CONFIG_MAGIC_SYSRQ | is not set | clipos | cut_attack_surface | FAIL: "y"
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CONFIG_X86_CPUID | is not set | clipos | cut_attack_surface | FAIL: "m"
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CONFIG_BPF_SYSCALL | is not set | lockdown | cut_attack_surface | FAIL: "y"
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```
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Totals: 'OK' - 148 / 'FAIL' - 16
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