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-rw-r--r--puppet/services/kernel.yaml2
-rw-r--r--releasenotes/notes/restrict-access-to-kernel-message-buffer-809160674b92a073.yaml11
2 files changed, 13 insertions, 0 deletions
diff --git a/puppet/services/kernel.yaml b/puppet/services/kernel.yaml
index fec455d1..ee4c771f 100644
--- a/puppet/services/kernel.yaml
+++ b/puppet/services/kernel.yaml
@@ -56,5 +56,7 @@ outputs:
value: 10000
kernel.pid_max:
value: {get_param: KernelPidMax}
+ kernel.dmesg_restrict:
+ value: 1
step_config: |
include ::tripleo::profile::base::kernel
diff --git a/releasenotes/notes/restrict-access-to-kernel-message-buffer-809160674b92a073.yaml b/releasenotes/notes/restrict-access-to-kernel-message-buffer-809160674b92a073.yaml
new file mode 100644
index 00000000..c24e8921
--- /dev/null
+++ b/releasenotes/notes/restrict-access-to-kernel-message-buffer-809160674b92a073.yaml
@@ -0,0 +1,11 @@
+---
+upgrade:
+ - |
+ The kernel.dmesg_restrict is now set to 1 to prevent exposure of sensitive
+ kernel address information with unprivileged access. Deployments that set
+ or depend on values other than 1 for kernel.dmesg_restrict may be affected
+ by upgrading.
+security:
+ - |
+ Kernel syslog contains sensitive kernel address information, setting
+ kernel.dmesg_restrict to avoid unprivileged access to this information.