I'm using a Data Modul EasyTouch USB multitouch controller,
which is issuing a hid report with a size equals to 0. The rsize
value gets set to 536870912 and Linux is crashing in the memset
because the value is too big.
Signed-off-by: Armando Visconti <armando.visconti@xxxxxx>
---
drivers/hid/hid-core.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index c3d6626..3e972e3 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1045,6 +1045,9 @@ void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
rsize = ((report->size - 1) >> 3) + 1;
+ if (rsize > HID_MAX_BUFFER_SIZE)
+ rsize = HID_MAX_BUFFER_SIZE;
+
if (csize < rsize) {
dbg_hid("report %d is too short, (%d < %d)\n", report->id,
csize, rsize);
--
1.7.4
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