[PATCH] sysctl.conf: Turn on hard- and symlink protection

Cc: Michael Tremer michael.tremer@ipfire.org Cc: Arne Fitzenreiter arne_f@ipfire.org Signed-off-by: Peter Müller peter.mueller@ipfire.org --- config/etc/sysctl.conf | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/config/etc/sysctl.conf b/config/etc/sysctl.conf index d11e53c88..7e7ebee44 100644 --- a/config/etc/sysctl.conf +++ b/config/etc/sysctl.conf @@ -45,6 +45,10 @@ kernel.kptr_restrict = 2 # Avoid kernel memory address exposures via dmesg. kernel.dmesg_restrict = 1

+# Turn on hard- and symlink protection +fs.protected_symlinks = 1 +fs.protected_hardlinks = 1 + # Minimal preemption granularity for CPU-bound tasks: # (default: 1 msec# (1 + ilog(ncpus)), units: nanoseconds) kernel.sched_min_granularity_ns = 10000000