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List:       ipfire-development
Subject:    Re: [PATCH] sysctl.conf: Turn on hard- and symlink protection
From:       Michael Tremer <michael.tremer () ipfire ! org>
Date:       2020-01-23 22:27:33
Message-ID: DDC6E406-2418-4D4E-9EE9-79C19262D150 () ipfire ! org
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Acked-by: Michael Tremer <michael.tremer@ipfire.org>

> On 23 Jan 2020, at 21:28, Peter Müller <peter.mueller@ipfire.org> wrote:
> 
> 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
> -- 
> 2.16.4

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