[PATCH V2 net-next 11/11] net: add is_valid_ether_addr check in dev_set_mac_address
From: Jijie Shao <shaojijie@huawei.com>
Date: 2024-08-20 14:08:37
Also in:
lkml
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
core need test the mac_addr not every driver need to do. Signed-off-by: Jijie Shao <shaojijie@huawei.com> --- net/core/dev.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/core/dev.c b/net/core/dev.c
index e7260889d4cb..2e19712184bc 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c@@ -9087,6 +9087,8 @@ int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa, return -EOPNOTSUPP; if (sa->sa_family != dev->type) return -EINVAL; + if (!is_valid_ether_addr(sa->sa_data)) + return -EADDRNOTAVAIL; if (!netif_device_present(dev)) return -ENODEV; err = dev_pre_changeaddr_notify(dev, sa->sa_data, extack);
--
2.33.0