diff options
| author | David S. Miller <davem@davemloft.net> | 2017-07-19 22:33:24 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-19 22:33:24 +0200 |
| commit | 63679112c536289826fec61c917621de95ba2ade (patch) | |
| tree | 579ed94180d17e7422a26c39d9787771bf5c8409 /net | |
| parent | wireless: wext: terminate ifr name coming from userspace (diff) | |
| download | linux-63679112c536289826fec61c917621de95ba2ade.tar.xz linux-63679112c536289826fec61c917621de95ba2ade.zip | |
net: Zero terminate ifr_name in dev_ifname().
The ifr.ifr_name is passed around and assumed to be NULL terminated.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dev_ioctl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c index 7657ad6bc13d..06b147d7d9e2 100644 --- a/net/core/dev_ioctl.c +++ b/net/core/dev_ioctl.c @@ -28,6 +28,7 @@ static int dev_ifname(struct net *net, struct ifreq __user *arg) if (copy_from_user(&ifr, arg, sizeof(struct ifreq))) return -EFAULT; + ifr.ifr_name[IFNAMSIZ-1] = 0; error = netdev_get_name(net, ifr.ifr_name, ifr.ifr_ifindex); if (error) |