diff mbox series

[4.4,240/312] bonding: fix length of actor system

Message ID 20200508123141.304323372@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman May 8, 2020, 12:33 p.m. UTC 
From: Tobias Jungel <tobias.jungel@gmail.com>

commit 414dd6fb9a1a1b59983aea7bf0f79f0085ecc5b8 upstream.

The attribute IFLA_BOND_AD_ACTOR_SYSTEM is sent to user space having the
length of sizeof(bond->params.ad_actor_system) which is 8 byte. This
patch aligns the length to ETH_ALEN to have the same MAC address exposed
as using sysfs.

Fixes: f87fda00b6ed2 ("bonding: prevent out of bound accesses")
Signed-off-by: Tobias Jungel <tobias.jungel@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/bonding/bond_netlink.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -628,8 +628,7 @@  static int bond_fill_info(struct sk_buff
 				goto nla_put_failure;
 
 			if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,
-				    sizeof(bond->params.ad_actor_system),
-				    &bond->params.ad_actor_system))
+				    ETH_ALEN, &bond->params.ad_actor_system))
 				goto nla_put_failure;
 		}
 		if (!bond_3ad_get_active_agg_info(bond, &info)) {