lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 15 Jul 2019 10:28:31 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Josua Mayer <josua.mayer@....eu>, Jukka Rissanen <jukka.rissanen@...ux.intel.com>, Michael Scott <mike@...ndries.io>, Marcel Holtmann <marcel@...tmann.org>, Sasha Levin <sashal@...nel.org>, linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org Subject: [PATCH AUTOSEL 4.14 097/105] Bluetooth: 6lowpan: search for destination address in all peers From: Josua Mayer <josua.mayer@....eu> [ Upstream commit b188b03270b7f8568fc714101ce82fbf5e811c5a ] Handle overlooked case where the target address is assigned to a peer and neither route nor gateway exist. For one peer, no checks are performed to see if it is meant to receive packets for a given address. As soon as there is a second peer however, checks are performed to deal with routes and gateways for handling complex setups with multiple hops to a target address. This logic assumed that no route and no gateway imply that the destination address can not be reached, which is false in case of a direct peer. Acked-by: Jukka Rissanen <jukka.rissanen@...ux.intel.com> Tested-by: Michael Scott <mike@...ndries.io> Signed-off-by: Josua Mayer <josua.mayer@....eu> Signed-off-by: Marcel Holtmann <marcel@...tmann.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- net/bluetooth/6lowpan.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c index 4e2576fc0c59..357475cceec6 100644 --- a/net/bluetooth/6lowpan.c +++ b/net/bluetooth/6lowpan.c @@ -187,10 +187,16 @@ static inline struct lowpan_peer *peer_lookup_dst(struct lowpan_btle_dev *dev, } if (!rt) { - nexthop = &lowpan_cb(skb)->gw; - - if (ipv6_addr_any(nexthop)) - return NULL; + if (ipv6_addr_any(&lowpan_cb(skb)->gw)) { + /* There is neither route nor gateway, + * probably the destination is a direct peer. + */ + nexthop = daddr; + } else { + /* There is a known gateway + */ + nexthop = &lowpan_cb(skb)->gw; + } } else { nexthop = rt6_nexthop(rt, daddr); -- 2.20.1
Powered by blists - more mailing lists