### Usage
```
#./kconfig-hardened-check.py
-usage: kconfig-hardened-check.py [-h] [-p {X86_64}] [-c CONFIG] [--debug]
+usage: kconfig-hardened-check.py [-h] [-p {X86_64,X86_32}] [-c CONFIG]
+ [--debug]
Checks the hardening options in the Linux kernel config
optional arguments:
-h, --help show this help message and exit
- -p {X86_64}, --print {X86_64}
+ -p {X86_64,X86_32}, --print {X86_64,X86_32}
print hardening preferences for selected architecture
-c CONFIG, --config CONFIG
check the config_file against these preferences
### Script output for `Ubuntu 18.04 (Bionic Beaver)` kernel config
```
-#./kconfig-hardened-check.py -c config_files/ubuntu-bionic-generic.config
-[+] Trying to detect architecture in "config_files/ubuntu-bionic-generic.config"...
+#./kconfig-hardened-check.py -c config_files/distros/ubuntu-bionic-generic.config
+[+] Trying to detect architecture in "config_files/distros/ubuntu-bionic-generic.config"...
[+] Detected architecture: X86_64
-[+] Checking "config_files/ubuntu-bionic-generic.config" against hardening preferences...
+[+] Checking "config_files/distros/ubuntu-bionic-generic.config" against hardening preferences...
option name | desired val | decision | reason || check result
===================================================================================================================
CONFIG_BUG | y |defconfig | self_protection || OK
- CONFIG_PAGE_TABLE_ISOLATION | y |defconfig | self_protection || OK
CONFIG_RETPOLINE | y |defconfig | self_protection || OK
CONFIG_X86_SMAP | y |defconfig | self_protection || OK
CONFIG_X86_INTEL_UMIP | y |defconfig | self_protection || OK
CONFIG_STRICT_KERNEL_RWX | y |defconfig | self_protection || OK
CONFIG_RANDOMIZE_BASE | y |defconfig | self_protection || OK
- CONFIG_RANDOMIZE_MEMORY | y |defconfig | self_protection || OK
CONFIG_STACKPROTECTOR_STRONG | y |defconfig | self_protection ||CONFIG_CC_STACKPROTECTOR_STRONG: OK ("y")
- CONFIG_VMAP_STACK | y |defconfig | self_protection || OK
CONFIG_THREAD_INFO_IN_TASK | y |defconfig | self_protection || OK
CONFIG_SLUB_DEBUG | y |defconfig | self_protection || OK
CONFIG_STRICT_MODULE_RWX | y |defconfig | self_protection || OK
CONFIG_SYN_COOKIES | y |defconfig | self_protection || OK
+ CONFIG_PAGE_TABLE_ISOLATION | y |defconfig | self_protection || OK
+ CONFIG_RANDOMIZE_MEMORY | y |defconfig | self_protection || OK
+ CONFIG_VMAP_STACK | y |defconfig | self_protection || OK
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_SECCOMP_FILTER | y |defconfig | cut_attack_surface || OK
CONFIG_STRICT_DEVMEM | y |defconfig | cut_attack_surface || OK
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_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_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_LEGACY_VSYSCALL_NONE | y | kspp | cut_attack_surface || FAIL: "is not set"
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_HIBERNATION | is not set | kspp | cut_attack_surface || FAIL: "y"
CONFIG_X86_PTDUMP | is not set |grsecurity| cut_attack_surface || OK
CONFIG_ZSMALLOC_STAT | is not set |grsecurity| cut_attack_surface || OK
CONFIG_PAGE_OWNER | is not set |grsecurity| cut_attack_surface || OK
[-] config check is NOT PASSED: 56 errors
```
+__Go and fix them all!__
-N.B. If `CONFIG_GCC_PLUGIN*` options are automatically disabled during your kernel compilation,
-that means that your gcc doesn't support plugins. For example, if you have `gcc-7` on Ubuntu,
-try to install `gcc-7-plugin-dev` package, it should help.
+N.B. If `CONFIG_GCC_PLUGIN*` options are automatically disabled during your kernel compilation,
+then your gcc doesn't support plugins. For example, if you have `gcc-7` on Ubuntu, try to install
+`gcc-7-plugin-dev` package, it should help.
-__Go and fix them all!__
[1]: http://kernsec.org/wiki/index.php/Kernel_Self_Protection_Project/Recommended_Settings
[2]: https://grsecurity.net/