4.19-stable patches

added patches:
	bluetooth-fix-the-creation-of-hdev-name.patch

diff --git a/queue-4.19/bluetooth-fix-the-creation-of-hdev-name.patch b/queue-4.19/bluetooth-fix-the-creation-of-hdev-name.patch
new file mode 100644 (file)
index 0000000..bbdc208
--- /dev/null
+++ b/queue-4.19/bluetooth-fix-the-creation-of-hdev-name.patch
@@ -0,0 +1,65 @@
+From 103a2f3255a95991252f8f13375c3a96a75011cd Mon Sep 17 00:00:00 2001
+From: Itay Iellin <ieitayie@gmail.com>
+Date: Sat, 7 May 2022 08:32:48 -0400
+Subject: Bluetooth: Fix the creation of hdev->name
+
+From: Itay Iellin <ieitayie@gmail.com>
+
+commit 103a2f3255a95991252f8f13375c3a96a75011cd upstream.
+
+Set a size limit of 8 bytes of the written buffer to "hdev->name"
+including the terminating null byte, as the size of "hdev->name" is 8
+bytes. If an id value which is greater than 9999 is allocated,
+then the "snprintf(hdev->name, sizeof(hdev->name), "hci%d", id)"
+function call would lead to a truncation of the id value in decimal
+notation.
+
+Set an explicit maximum id parameter in the id allocation function call.
+The id allocation function defines the maximum allocated id value as the
+maximum id parameter value minus one. Therefore, HCI_MAX_ID is defined
+as 10000.
+
+Signed-off-by: Itay Iellin <ieitayie@gmail.com>
+Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ include/net/bluetooth/hci_core.h |    3 +++
+ net/bluetooth/hci_core.c         |    6 +++---
+ 2 files changed, 6 insertions(+), 3 deletions(-)
+
+--- a/include/net/bluetooth/hci_core.h
++++ b/include/net/bluetooth/hci_core.h
+@@ -34,6 +34,9 @@
+ /* HCI priority */
+ #define HCI_PRIO_MAX  7
+ 
++/* HCI maximum id value */
++#define HCI_MAX_ID 10000
++
+ /* HCI Core structures */
+ struct inquiry_data {
+       bdaddr_t        bdaddr;
+--- a/net/bluetooth/hci_core.c
++++ b/net/bluetooth/hci_core.c
+@@ -3180,10 +3180,10 @@ int hci_register_dev(struct hci_dev *hde
+        */
+       switch (hdev->dev_type) {
+       case HCI_PRIMARY:
+-              id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL);
++              id = ida_simple_get(&hci_index_ida, 0, HCI_MAX_ID, GFP_KERNEL);
+               break;
+       case HCI_AMP:
+-              id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL);
++              id = ida_simple_get(&hci_index_ida, 1, HCI_MAX_ID, GFP_KERNEL);
+               break;
+       default:
+               return -EINVAL;
+@@ -3192,7 +3192,7 @@ int hci_register_dev(struct hci_dev *hde
+       if (id < 0)
+               return id;
+ 
+-      sprintf(hdev->name, "hci%d", id);
++      snprintf(hdev->name, sizeof(hdev->name), "hci%d", id);
+       hdev->id = id;
+ 
+       BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);

diff --git a/queue-4.19/series b/queue-4.19/series
index cc120ae585ccc4ac3bf4bc8be8c4ccfce450cc04..74b4576fffdd7ef6973de49a7344a0c031d83991 100644 (file)
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -4,3 +4,4 @@ drm-amd-display-dc-gpio-gpio_service-pass-around-correct-dce_-version-environmen
 nfp-bpf-silence-bitwise-vs.-logical-or-warning.patch
 can-grcan-grcan_probe-fix-broken-system-id-check-for-errata-workaround-needs.patch
 can-grcan-only-use-the-napi-poll-budget-for-rx.patch
+bluetooth-fix-the-creation-of-hdev-name.patch