Add the LKDTM check

Thanks to @izh1979 for the idea.

diff --git a/kernel_hardening_checker/checks.py b/kernel_hardening_checker/checks.py
index 6b89bd791c6c05a5f8ef32b177d7bf6a612634b4..d0fd79ea30f79b2b13f98d25b0ab74e505343af7 100755 (executable)
--- a/kernel_hardening_checker/checks.py
+++ b/kernel_hardening_checker/checks.py
@@ -424,6 +424,8 @@ def add_kconfig_checks(l: List[ChecklistObjType], arch: str) -> None:
     l += [KconfigCheck('cut_attack_surface', 'a13xp0p0v', 'XFS_SUPPORT_V4', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'a13xp0p0v', 'BLK_DEV_WRITE_MOUNTED', 'is not set')]
     l += [KconfigCheck('cut_attack_surface', 'a13xp0p0v', 'FAULT_INJECTION', 'is not set')]
+    l += [KconfigCheck('cut_attack_surface', 'a13xp0p0v', 'LKDTM', 'is not set')]
+                                            # dangerous, only for debugging the kernel hardening features!
     l += [OR(KconfigCheck('cut_attack_surface', 'a13xp0p0v', 'TRIM_UNUSED_KSYMS', 'y'),
              modules_not_set)]
     l += [OR(KconfigCheck('cut_attack_surface', 'a13xp0p0v', 'MAGIC_SYSRQ_SERIAL', 'is not set'),