1 files changed, 55 insertions, 0 deletions
diff --git a/debian/patches/features/all/lockdown/0014-asus-wmi-Restrict-debugfs-interface-when-the-kernel-.patch b/debian/patches/features/all/lockdown/0014-asus-wmi-Restrict-debugfs-interface-when-the-kernel-.patch
new file mode 100644
index 000000000..295b46e88
--- /dev/null
+++ b/debian/patches/features/all/lockdown/0014-asus-wmi-Restrict-debugfs-interface-when-the-kernel-.patch
@@ -0,0 +1,55 @@
+From: Matthew Garrett <matthew.garrett@nebula.com>
+Date: Wed, 8 Nov 2017 15:11:34 +0000
+Subject: [14/29] asus-wmi: Restrict debugfs interface when the kernel is
+ locked down
+Origin: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit?id=2e6d31b3176ee27d216bb92a3b108f6b19d4719a
+
+We have no way of validating what all of the Asus WMI methods do on a given
+machine - and there's a risk that some will allow hardware state to be
+manipulated in such a way that arbitrary code can be executed in the
+kernel, circumventing module loading restrictions.  Prevent that if the
+kernel is locked down.
+
+Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
+Signed-off-by: David Howells <dhowells@redhat.com>
+Reviewed-by: "Lee, Chun-Yi" <jlee@suse.com>
+cc: acpi4asus-user@lists.sourceforge.net
+cc: platform-driver-x86@vger.kernel.org
+---
+ drivers/platform/x86/asus-wmi.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+Index: linux/drivers/platform/x86/asus-wmi.c
+===================================================================
+--- linux.orig/drivers/platform/x86/asus-wmi.c
++++ linux/drivers/platform/x86/asus-wmi.c
+@@ -2002,6 +2002,9 @@ static int show_dsts(struct seq_file *m,
+ 	int err;
+ 	u32 retval = -1;
+ 
++	if (kernel_is_locked_down("Asus WMI"))
++		return -EPERM;
++
+ 	err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
+ 
+ 	if (err < 0)
+@@ -2018,6 +2021,9 @@ static int show_devs(struct seq_file *m,
+ 	int err;
+ 	u32 retval = -1;
+ 
++	if (kernel_is_locked_down("Asus WMI"))
++		return -EPERM;
++
+ 	err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
+ 				    &retval);
+ 
+@@ -2042,6 +2048,9 @@ static int show_call(struct seq_file *m,
+ 	union acpi_object *obj;
+ 	acpi_status status;
+ 
++	if (kernel_is_locked_down("Asus WMI"))
++		return -EPERM;
++
+ 	status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
+ 				     0, asus->debug.method_id,
+ 				     &input, &output);