GNU bug report logs - #36701
[PATCH] gnu: linux-libre: Restrict ‘dmesg’ to privileged users.

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From: Tobias Geerinckx-Rice <me <at> tobias.gr>
To: guix-devel <at> gnu.org, 36701 <at> debbugs.gnu.org
Subject: [bug#36701] [PATCH] gnu: linux-libre: Restrict ‘dmesg’ to privileged users.
Date: Wed, 17 Jul 2019 09:26:08 +0200

* gnu/packages/linux.scm (%default-extra-linux-options):
Set CONFIG_SECURITY_DMESG_RESTRICT.
---

Re: https://lists.gnu.org/archive/html/guix-devel/2019-07/msg00258.html

Patchy patch.

 gnu/packages/linux.scm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index 30192f195d..73c7083e7c 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -273,7 +273,9 @@ for ARCH and optionally VARIANT, or #f if there is no such configuration."
     (search-auxiliary-file file)))
 
 (define %default-extra-linux-options
-  `(;; Modules required for initrd:
+  `(;; Some very mild hardening.
+    ("CONFIG_SECURITY_DMESG_RESTRICT" . #t)
+    ;; Modules required for initrd:
     ("CONFIG_NET_9P" . m)
     ("CONFIG_NET_9P_VIRTIO" . m)
     ("CONFIG_VIRTIO_BLK" . m)
-- 
2.22.0

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