4.18-stable review patch. If anyone has any objections, please let me know.
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From: Tobias Jungel tobias.jungel@gmail.com
[ Upstream commit 414dd6fb9a1a1b59983aea7bf0f79f0085ecc5b8 ]
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(-)
--- a/drivers/net/bonding/bond_netlink.c +++ b/drivers/net/bonding/bond_netlink.c @@ -638,8 +638,7 @@ 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)) {