Merge branch 'sec-v3.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/sergeh...

[deliverable/linux.git] / drivers / hid / hid-magicmouse.c

diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
index ecc2cbf300cc39bc31e3ff5ad5979dff49822402..29a74c1efcb85fa727536c4b72be844f9963cd70 100644 (file)
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -290,6 +290,11 @@ static int magicmouse_raw_event(struct hid_device *hdev,
                if (size < 4 || ((size - 4) % 9) != 0)
                        return 0;
                npoints = (size - 4) / 9;
+               if (npoints > 15) {
+                       hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n",
+                                       size);
+                       return 0;
+               }
                msc->ntouches = 0;
                for (ii = 0; ii < npoints; ii++)
                        magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
@@ -307,6 +312,11 @@ static int magicmouse_raw_event(struct hid_device *hdev,
                if (size < 6 || ((size - 6) % 8) != 0)
                        return 0;
                npoints = (size - 6) / 8;
+               if (npoints > 15) {
+                       hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n",
+                                       size);
+                       return 0;
+               }
                msc->ntouches = 0;
                for (ii = 0; ii < npoints; ii++)
                        magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);