From 8e3fbf870481eb53b2d3a322d1fc395ad8b367ed Mon Sep 17 00:00:00 2001 From: =?utf8?q?Salva=20Peir=C3=B3?= Date: Tue, 17 Dec 2013 10:06:30 +0100 Subject: [PATCH] hamradio/yam: fix info leak in ioctl MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The yam_ioctl() code fails to initialise the cmd field of the struct yamdrv_ioctl_cfg. Add an explicit memset(0) before filling the structure to avoid the 4-byte info leak. Signed-off-by: Salva Peiró Signed-off-by: David S. Miller --- drivers/net/hamradio/yam.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c index 1971411..61dd244 100644 --- a/drivers/net/hamradio/yam.c +++ b/drivers/net/hamradio/yam.c @@ -1057,6 +1057,7 @@ static int yam_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) break; case SIOCYAMGCFG: + memset(&yi, 0, sizeof(yi)); yi.cfg.mask = 0xffffffff; yi.cfg.iobase = yp->iobase; yi.cfg.irq = yp->irq; -- 2.7.4