When changing a device by ifindex without including a IFLA_IFNAME
attribute, the ifname variable contains random garbage and is used
to change the device name.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
if (tb[IFLA_IFNAME])
nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
if (tb[IFLA_IFNAME])
nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+ else
+ ifname[0] = '\0';
err = -EINVAL;
ifm = nlmsg_data(nlh);
err = -EINVAL;
ifm = nlmsg_data(nlh);