From a294a814515d9f64f9eff6c1812b94c6af71f4ff Mon Sep 17 00:00:00 2001 From: Valentin Vidic Date: Tue, 15 Oct 2019 22:20:20 +0200 Subject: [PATCH] net: usb: sr9800: fix uninitialized local variable commit 77b6d09f4ae66d42cd63b121af67780ae3d1a5e9 upstream. Make sure res does not contain random value if the call to sr_read_cmd fails for some reason. Reported-by: syzbot+f1842130bbcfb335bac1@syzkaller.appspotmail.com Signed-off-by: Valentin Vidic Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/usb/sr9800.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c index 004c955c1fd1..da0ae16f5c74 100644 --- a/drivers/net/usb/sr9800.c +++ b/drivers/net/usb/sr9800.c @@ -336,7 +336,7 @@ static void sr_set_multicast(struct net_device *net) static int sr_mdio_read(struct net_device *net, int phy_id, int loc) { struct usbnet *dev = netdev_priv(net); - __le16 res; + __le16 res = 0; mutex_lock(&dev->phy_mutex); sr_set_sw_mii(dev);