diff options
| author | Pavel Emelyanov <xemul@openvz.org> | 2008-04-12 18:40:38 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-04-12 18:40:38 -0700 |
| commit | a40a7d15ba602b547f56b7b19e0282fe4fc3dee3 (patch) | |
| tree | 81eede5e751b3e5600547018285c739825a08d48 | |
| parent | ab38fb04c9f8928cfaf6f4966633d783419906a1 (diff) | |
| download | linux-a40a7d15ba602b547f56b7b19e0282fe4fc3dee3.tar.bz2 | |
[SCTP]: IPv4 vs IPv6 addresses mess in sctp_inet[6]addr_event.
All IP addresses that are present in a system are duplicated on
struct sctp_sockaddr_entry. They are linked in the global list
called sctp_local_addr_list. And this struct unions IPv4 and IPv6
addresses.
So, there can be rare case, when a sockaddr_in.sin_addr coincides
with the corresponding part of the sockaddr_in6 and the notifier
for IPv4 will carry away an IPv6 entry.
The fix is to check the family before comparing the addresses.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sctp/ipv6.c | 5 | ||||
| -rw-r--r-- | net/sctp/protocol.c | 4 |
2 files changed, 6 insertions, 3 deletions
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index b1e05d719f9b..85f1495e0edc 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -110,8 +110,9 @@ static int sctp_inet6addr_event(struct notifier_block *this, unsigned long ev, spin_lock_bh(&sctp_local_addr_lock); list_for_each_entry_safe(addr, temp, &sctp_local_addr_list, list) { - if (ipv6_addr_equal(&addr->a.v6.sin6_addr, - &ifa->addr)) { + if (addr->a.sa.sa_family == AF_INET6 && + ipv6_addr_equal(&addr->a.v6.sin6_addr, + &ifa->addr)) { found = 1; addr->valid = 0; list_del_rcu(&addr->list); diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index f90091a1b9ce..c2dd65d9f38d 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -647,7 +647,9 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev, spin_lock_bh(&sctp_local_addr_lock); list_for_each_entry_safe(addr, temp, &sctp_local_addr_list, list) { - if (addr->a.v4.sin_addr.s_addr == ifa->ifa_local) { + if (addr->a.sa.sa_family == AF_INET && + addr->a.v4.sin_addr.s_addr == + ifa->ifa_local) { found = 1; addr->valid = 0; list_del_rcu(&addr->list); |