HID: fix overrun in quirks initialization

Check whether index is within bounds before testing the element.

declared in drivers/hid/usbhid/hid-core.c:62:
static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = ...

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index d8f7423..0d9045a 100644 (file)
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -201,7 +201,7 @@ int usbhid_quirks_init(char **quirks_param)
        u32 quirks;
        int n = 0, m;
 
-       for (; quirks_param[n] && n < MAX_USBHID_BOOT_QUIRKS; n++) {
+       for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) {
 
                m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
                                &idVendor, &idProduct, &quirks);