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authorDavid S. Miller <davem@davemloft.net>2017-07-19 13:33:24 -0700
committerDavid S. Miller <davem@davemloft.net>2017-07-19 13:33:24 -0700
commit63679112c536289826fec61c917621de95ba2ade (patch)
tree579ed94180d17e7422a26c39d9787771bf5c8409 /net/core
parent98de4e0ea47d106846fc0e30ce4e644283fa7fc2 (diff)
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/core')
-rw-r--r--net/core/dev_ioctl.c1
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)