kernel.git/drivers/hid/hid-multitouch.c, branch linux-3.4.y

HID: multitouch: validate indexes details

2014-04-14T13:44:18Z

commit 8821f5dc187bdf16cfb32ef5aa8c3035273fa79a upstream. When working on report indexes, always validate that they are in bounds. Without this, a HID device could report a malicious feature report that could trick the driver into a heap overflow: [ 634.885003] usb 1-1: New USB device found, idVendor=0596, idProduct=0500 ... [ 676.469629] BUG kmalloc-192 (Tainted: G W ): Redzone overwritten Note that we need to change the indexes from s8 to s16 as they can be between -1 and 255. CVE-2013-2897 Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires Acked-by: Kees Cook Signed-off-by: Jiri Kosina [bwh: Backported to 3.2: mt_device::{cc,cc_value,inputmode}_index do not exist and the corresponding indices do not need to be validated. mt_device::maxcontact_report_id does not exist either. So all we need to do is to widen mt_device::inputmode.] Signed-off-by: Ben Hutchings [yjw: Backport to 3.4: maxcontact_report_id exists, need to be validated] Signed-off-by: Yijing Wang Signed-off-by: Greg Kroah-Hartman

HID: multitouch: add support for Novatek touchscreen

2012-08-15T15:10:30Z

commit 4db703ead4535792ea54dba7275fdd1527848e74 upstream. Add support for a Novatek touchscreen panel as a generic HID multitouch panel. Signed-off-by: Austin Hendrix Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman

HID: multitouch: Add support for Baanto touchscreen

2012-07-29T15:04:19Z

commit 9ed326951806c424b42dcf2e1125e25a98fb13d1 upstream. Reported-by: Tvrtko Ursulin Tested-by: Tvrtko Ursulin Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman

HID: hid-multitouch: fix wrong protocol detection

2012-07-16T16:04:28Z

commit 3ac36d15557d1bedfb1151d9911b9587b2d40759 upstream. The previous implementation introduced a randomness in the splitting of the different touches reported by the device. This version is more robust as we don't rely on hi->input->absbit, but on our own structure. This also prepares hid-multitouch to better support Win8 devices. [Jiri Kosina : fix build] Signed-off-by: Benjamin Tissoires Acked-by: Henrik Rydberg Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman

Merge branch 'upstream' into for-linus

2012-03-20T12:18:05Z

Conflicts: drivers/hid/Makefile

HID: multitouch: add PID for Fructel product

2012-03-20T12:17:22Z

Adds multitouch support for the Gametel Android game controller. The multitouch events are emulated by the Gametel device. Each physical button is configured to generate a MT event on a specific coordinate. This seems to be the only way for us to support Android games that doesn't support HID gamepads. It is possible to inject MT events at Android level, but this requires root on the phone. Signed-off-by: Andreas Nielsen Signed-off-by: Jiri Kosina

HID: multitouch: detect serial protocol

2012-03-12T11:50:27Z

Microsoft's documentation about multitouch protocols tells that if a device presents one touch per report, then it should be treated as a serial protocol. Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina

HID: handle all multitouch devices through hid-multitouch

2012-03-12T10:27:07Z

When the quirk HID_QUIRK_MULTITOUCH is present and when hid-multitouch is loaded, let's pass the device to hid-multitouch even if it has not been registered in hid-multitouch. If any other driver wants to take precedence over hid-multitouch, the usual way of adding it to hid_have_special_driver will work as the quirk HID_QUIRK_MULTITOUCH won't be set by the generic hid layer. Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina

HID: multitouch: fix handling of buggy reports descriptors for Dell ST2220T

2012-03-12T10:23:55Z

LG multitouch panels, such as the one found in Dell ST2220T, has buggy reports descriptors. With the previous implementation, it was impossible to rely on the reports descriptors to determine how the different touches are emitted from the device. This patch changes the splitting of the different touches in the report in a more robust way. Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina

HID: multitouch: add support for eGalax 0x722a

2012-03-09T12:27:53Z

Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina