Skip unprivileged_bpf_disabled if BPF_SYSCALL not set

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

diff --git a/kernel_hardening_checker/checks.py b/kernel_hardening_checker/checks.py
index fa5c08a9e0854ec97151727e7dd41e8905f8042a..9f48d5849f6a675a3d560ec0138a2ad8da44e956 100644 (file)
--- a/kernel_hardening_checker/checks.py
+++ b/kernel_hardening_checker/checks.py
@@ -676,7 +676,9 @@ def add_sysctl_checks(l, _arch):
                  have_config_file))]
     l += [SysctlCheck('cut_attack_surface', 'kspp', 'user.max_user_namespaces', '0')] # may break the upower daemon in Ubuntu
     l += [SysctlCheck('cut_attack_surface', 'kspp', 'dev.tty.ldisc_autoload', '0')]
-    l += [SysctlCheck('cut_attack_surface', 'kspp', 'kernel.unprivileged_bpf_disabled', '1')]
+    l += [OR(SysctlCheck('cut_attack_surface', 'kspp', 'kernel.unprivileged_bpf_disabled', '1'),
+             AND(KconfigCheck('cut_attack_surface', 'lockdown', 'BPF_SYSCALL', 'is not set'),
+                 have_config_file))]
     l += [SysctlCheck('cut_attack_surface', 'kspp', 'kernel.kptr_restrict', '2')]
     l += [SysctlCheck('cut_attack_surface', 'kspp', 'dev.tty.legacy_tiocsti', '0')]
     l += [SysctlCheck('cut_attack_surface', 'kspp', 'vm.unprivileged_userfaultfd', '0')]