diff options
| -rw-r--r-- | net/core/sock.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index 1a7e6eac90b..e110b900414 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -404,8 +404,9 @@ set_rcvbuf: if (!valbool) { sk->sk_bound_dev_if = 0; } else { - if (optlen > IFNAMSIZ) - optlen = IFNAMSIZ; + if (optlen > IFNAMSIZ - 1) + optlen = IFNAMSIZ - 1; + memset(devname, 0, sizeof(devname)); if (copy_from_user(devname, optval, optlen)) { ret = -EFAULT; break; |