From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jiri Kosina <jikos@kernel.org>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>,
linux-input@vger.kernel.org
Subject: [PATCH 4.9 06/42] HID: wacom: fix problems when device is not a valid USB device
Date: Mon, 13 Dec 2021 10:29:48 +0100 [thread overview]
Message-ID: <20211213092926.780562238@linuxfoundation.org> (raw)
In-Reply-To: <20211213092926.578829548@linuxfoundation.org>
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 720ac467204a70308bd687927ed475afb904e11b upstream.
The wacom driver accepts devices of more than just USB types, but some
code paths can cause problems if the device being controlled is not a
USB device due to a lack of checking. Add the needed checks to ensure
that the USB device accesses are only happening on a "real" USB device,
and not one on some other bus.
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: linux-input@vger.kernel.org
Cc: stable@vger.kernel.org
Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20211201183503.2373082-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hid/wacom_sys.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -506,7 +506,7 @@ static void wacom_retrieve_hid_descripto
* Skip the query for this type and modify defaults based on
* interface number.
*/
- if (features->type == WIRELESS) {
+ if (features->type == WIRELESS && intf) {
if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
else
@@ -2115,6 +2115,9 @@ static void wacom_wireless_work(struct w
wacom_destroy_battery(wacom);
+ if (!usbdev)
+ return;
+
/* Stylus interface */
hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
wacom1 = hid_get_drvdata(hdev1);
@@ -2354,8 +2357,6 @@ static void wacom_remote_work(struct wor
static int wacom_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
- struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
- struct usb_device *dev = interface_to_usbdev(intf);
struct wacom *wacom;
struct wacom_wac *wacom_wac;
struct wacom_features *features;
@@ -2388,8 +2389,14 @@ static int wacom_probe(struct hid_device
wacom_wac->hid_data.inputmode = -1;
wacom_wac->mode_report = -1;
- wacom->usbdev = dev;
- wacom->intf = intf;
+ if (hid_is_usb(hdev)) {
+ struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+ struct usb_device *dev = interface_to_usbdev(intf);
+
+ wacom->usbdev = dev;
+ wacom->intf = intf;
+ }
+
mutex_init(&wacom->lock);
INIT_WORK(&wacom->wireless_work, wacom_wireless_work);
INIT_WORK(&wacom->battery_work, wacom_battery_work);
next prev parent reply other threads:[~2021-12-13 9:35 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-13 9:29 [PATCH 4.9 00/42] 4.9.293-rc1 review Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 01/42] HID: introduce hid_is_using_ll_driver Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 02/42] HID: add hid_is_usb() function to make it simpler for USB detection Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 03/42] HID: add USB_HID dependancy to hid-prodikeys Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 04/42] HID: add USB_HID dependancy to hid-chicony Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 05/42] HID: add USB_HID dependancy on some USB HID drivers Greg Kroah-Hartman
2021-12-13 9:29 ` Greg Kroah-Hartman [this message]
2021-12-13 9:29 ` [PATCH 4.9 07/42] HID: check for valid USB device for many " Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 08/42] can: sja1000: fix use after free in ems_pcmcia_add_card() Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 09/42] nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 10/42] IB/hfi1: Correct guard on eager buffer deallocation Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 11/42] mm: bdi: initialize bdi_min_ratio when bdi is unregistered Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 12/42] ALSA: ctl: Fix copy of updated id with element read/write Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 13/42] ALSA: pcm: oss: Fix negative period/buffer sizes Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 14/42] ALSA: pcm: oss: Limit the period size to 16MB Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 15/42] ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 16/42] tracefs: Have new files inherit the ownership of their parent Greg Kroah-Hartman
2021-12-13 9:29 ` [PATCH 4.9 17/42] can: pch_can: pch_can_rx_normal: fix use after free Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 18/42] libata: add horkage for ASMedia 1092 Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 19/42] wait: add wake_up_pollfree() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 20/42] binder: use wake_up_pollfree() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 21/42] signalfd: " Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 22/42] tracefs: Set all files to the same group ownership as the mount option Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 23/42] block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2) Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 24/42] net: cdc_ncm: Allow for dwNtbOutMaxSize to be unset or zero Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 25/42] net: altera: set a couple error code in probe() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 26/42] net: fec: only clear interrupt of handling queue in fec_enet_rx_queue() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 27/42] net, neigh: clear whole pneigh_entry at alloc time Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 28/42] net/qla3xxx: fix an error code in ql_adapter_up() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 29/42] USB: gadget: detect too-big endpoint 0 requests Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 30/42] USB: gadget: zero allocate endpoint 0 buffers Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 31/42] usb: core: config: fix validation of wMaxPacketValue entries Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 32/42] usb: core: config: using bit mask instead of individual bits Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 33/42] iio: stk3310: Dont return error code in interrupt handler Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 34/42] iio: mma8452: Fix trigger reference couting Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 35/42] iio: ltr501: Dont return error code in trigger handler Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 36/42] iio: kxsd9: " Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 37/42] iio: itg3200: Call iio_trigger_notify_done() on error Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 38/42] iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 39/42] irqchip/armada-370-xp: Fix return value of armada_370_xp_msi_alloc() Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 40/42] irqchip/armada-370-xp: Fix support for Multi-MSI interrupts Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 41/42] irqchip/irq-gic-v3-its.c: Force synchronisation when issuing INVALL Greg Kroah-Hartman
2021-12-13 9:30 ` [PATCH 4.9 42/42] irqchip: nvic: Fix offset for Interrupt Priority Offsets Greg Kroah-Hartman
2021-12-13 19:54 ` [PATCH 4.9 00/42] 4.9.293-rc1 review Guenter Roeck
2021-12-13 20:00 ` Florian Fainelli
2021-12-13 20:31 ` Shuah Khan
2021-12-14 5:53 ` Naresh Kamboju
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