dev->usbc_buf was passed as argument for %s, but it was not safeguarded by a terminating 0. This caused this syzbot issue: https://syzkaller.appspot.com/bug?extid=79d18aac4bf1770dd050 Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx> Reported-and-tested-by: syzbot+79d18aac4bf1770dd050@xxxxxxxxxxxxxxxxxxxxxxxxx --- diff --git a/drivers/media/usb/hdpvr/hdpvr-core.c b/drivers/media/usb/hdpvr/hdpvr-core.c index a0905c81d2cb..b75c18a012a7 100644 --- a/drivers/media/usb/hdpvr/hdpvr-core.c +++ b/drivers/media/usb/hdpvr/hdpvr-core.c @@ -137,6 +137,7 @@ static int device_authorization(struct hdpvr_device *dev) dev->fw_ver = dev->usbc_buf[1]; + dev->usbc_buf[46] = '\0'; v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n", dev->fw_ver, &dev->usbc_buf[2]);
