The HID response has a limited size. Do not trust the value returned by hardware, check that it really fits in the message. Signed-off-by: Peter Wu <peter@xxxxxxxxxxxxx> --- drivers/hid/hid-logitech-hidpp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 4d72c20..4292cc3 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -313,6 +313,9 @@ static char *hidpp_get_unifying_name(struct hidpp_device *hidpp_dev) len = response.rap.params[1]; + if (2 + len > sizeof(response.rap.params)) + return NULL; + name = kzalloc(len + 1, GFP_KERNEL); if (!name) return NULL; -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
