diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2016-01-29 12:30:20 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-01-29 20:31:26 -0800 |
| commit | 1cdda91871470f15e79375991bd2eddc6e86ddb1 (patch) | |
| tree | 1b85e50c353077ae7e06e932cbc456c10972227b | |
| parent | 6f21c96a78b835259546d8f3fb4edff0f651d478 (diff) | |
ipv6/udp: use sticky pktinfo egress ifindex on connect()
Currently, the egress interface index specified via IPV6_PKTINFO
is ignored by __ip6_datagram_connect(), so that RFC 3542 section 6.7
can be subverted when the user space application calls connect()
before sendmsg().
Fix it by initializing properly flowi6_oif in connect() before
performing the route lookup.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/datagram.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index 517c55b01ba8..428162155280 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -162,6 +162,9 @@ ipv4_connected: fl6.fl6_dport = inet->inet_dport; fl6.fl6_sport = inet->inet_sport; + if (!fl6.flowi6_oif) + fl6.flowi6_oif = np->sticky_pktinfo.ipi6_ifindex; + if (!fl6.flowi6_oif && (addr_type&IPV6_ADDR_MULTICAST)) fl6.flowi6_oif = np->mcast_oif; |