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From 8cdbd3b09f29da29374e2f83369df24228da0ad1 Mon Sep 17 00:00:00 2001
From: Alain Michaud <alainm@chromium.org>
Date: Tue, 10 Mar 2020 02:35:16 +0000
Subject: [PATCH 1/2] HOGP must only accept data from bonded devices.

HOGP 1.0 Section 6.1 establishes that the HOGP must require bonding.

Reference:
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00352.htm

Upstream-Status: Backport [https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=8cdbd3b09f29da29374e2f83369df24228da0ad1]
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
CVE: CVE-2020-0556
---
 profiles/input/hog.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/profiles/input/hog.c b/profiles/input/hog.c
index 83c017dcb..dfac68921 100644
--- a/profiles/input/hog.c
+++ b/profiles/input/hog.c
@@ -186,6 +186,10 @@ static int hog_accept(struct btd_service *service)
 			return -EINVAL;
 	}
 
+	/* HOGP 1.0 Section 6.1 requires bonding */
+	if (!device_is_bonded(device, btd_device_get_bdaddr_type(device)))
+		return -ECONNREFUSED;
+
 	/* TODO: Replace GAttrib with bt_gatt_client */
 	bt_hog_attach(dev->hog, attrib);
 
-- 
2.24.1