From 74963559e760568c1d4b11e4c120e792efd428e4 Mon Sep 17 00:00:00 2001 From: Alexander Popov Date: Sat, 30 Mar 2024 14:36:34 +0300 Subject: [PATCH] Add a comment that 'user.max_user_namespaces=0' may break the upower daemon --- kernel_hardening_checker/checks.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel_hardening_checker/checks.py b/kernel_hardening_checker/checks.py index 10c3482..5aff75e 100644 --- a/kernel_hardening_checker/checks.py +++ b/kernel_hardening_checker/checks.py @@ -649,7 +649,7 @@ def add_sysctl_checks(l, _arch): l += [SysctlCheck('cut_attack_surface', 'kspp', 'kernel.dmesg_restrict', '1')] l += [SysctlCheck('cut_attack_surface', 'kspp', 'kernel.perf_event_paranoid', '3')] # with a custom patch, see https://lwn.net/Articles/696216/ l += [SysctlCheck('cut_attack_surface', 'kspp', 'kernel.kexec_load_disabled', '1')] - l += [SysctlCheck('cut_attack_surface', 'kspp', 'user.max_user_namespaces', '0')] + 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 += [SysctlCheck('cut_attack_surface', 'kspp', 'kernel.kptr_restrict', '2')] -- 2.31.1