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bonding: fix length of actor system

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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>
This commit is contained in:
Tobias Jungel 2018-10-28 12:54:10 +01:00 • committed by Greg Kroah-Hartman
parent 5a257454a7
commit 8bddcd242a
1 changed files with 1 additions and 2 deletions
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3
drivers/net/bonding/bond_netlink.c
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@ -628,8 +628,7 @@ static int bond_fill_info(struct sk_buff *skb,
goto nla_put_failure; goto nla_put_failure;
if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM, if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,
sizeof(bond->params.ad_actor_system), ETH_ALEN, &bond->params.ad_actor_system))
&bond->params.ad_actor_system))
goto nla_put_failure; goto nla_put_failure;
} }
if (!bond_3ad_get_active_agg_info(bond, &info)) { if (!bond_3ad_get_active_agg_info(bond, &info)) {