Input: fix potential overflows in driver/input/mouse

Change all sprintfs into snprintfs to make sure we won't stomp on
data adjacent to our buffers.

Noticed by Wouter Paesen <wouter@kangaroot.net>

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c
index 136321a2cfdb..5f21532c24ff 100644
--- a/drivers/input/mouse/psmouse-base.c
+++ b/drivers/input/mouse/psmouse-base.c
@@ -1057,8 +1057,8 @@ static int psmouse_switch_protocol(struct psmouse *psmouse, struct psmouse_proto
         if (psmouse->resync_time && psmouse->poll(psmouse))
                 psmouse->resync_time = 0;
 
-        sprintf(psmouse->devname, "%s %s %s",
-                psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name);
+        snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s",
+                 psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name);
 
         input_dev->name = psmouse->devname;
         input_dev->phys = psmouse->phys;
@@ -1099,7 +1099,7 @@ static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
         ps2_init(&psmouse->ps2dev, serio);
         INIT_WORK(&psmouse->resync_work, psmouse_resync, psmouse);
         psmouse->dev = input_dev;
-        sprintf(psmouse->phys, "%s/input0", serio->phys);
+        snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys);
 
         psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);