From: "Peter Müller" <peter.mueller@link38.eu>
To: development@lists.ipfire.org
Subject: [PATCH] disable runtime kernel replacement via kexec
Date: Thu, 16 Aug 2018 17:31:58 +0200 [thread overview]
Message-ID: <57d61c63-b0a5-0a3b-c1d5-74e7cec2e583@link38.eu> (raw)
[-- Attachment #1: Type: text/plain, Size: 550 bytes --]
Signed-off-by: Peter Müller <peter.mueller(a)link38.eu>
---
config/etc/sysctl.conf | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/config/etc/sysctl.conf b/config/etc/sysctl.conf
index 011c4287e..5735dd42e 100644
--- a/config/etc/sysctl.conf
+++ b/config/etc/sysctl.conf
@@ -48,3 +48,7 @@ kernel.kptr_restrict = 1
# Avoid kernel memory address exposures via dmesg.
kernel.dmesg_restrict = 1
+
+# Turn off kexec, even if it's built in (dangerous because
+# it can replace the running kernel).
+kernel.kexec_load_disabled = 1
--
2.16.4
next reply other threads:[~2018-08-16 15:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-16 15:31 Peter Müller [this message]
2018-08-19 18:14 ` Peter Müller
2018-08-20 9:03 ` Michael Tremer
2018-08-20 15:17 ` Peter Müller
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