From 71bffe556c59a7865bf0b1ecd94530f1e296cdb0 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Wed, 11 Jul 2007 19:41:18 -0700 Subject: [PATCH] [ETH]: Validate address in eth_mac_addr Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/ethernet/eth.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c index 1387e5411f..12c765715a 100644 --- a/net/ethernet/eth.c +++ b/net/ethernet/eth.c @@ -266,8 +266,11 @@ void eth_header_cache_update(struct hh_cache *hh, struct net_device *dev, static int eth_mac_addr(struct net_device *dev, void *p) { struct sockaddr *addr = p; + if (netif_running(dev)) return -EBUSY; + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); return 0; } -- 2.39.5