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| author | Linus Walleij <linus.walleij@linaro.org> | 2019-02-11 09:17:23 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-02-11 09:17:23 +0100 |
| commit | e65372124cd749ebbe4ac2abe5a511d7d1ac68db (patch) | |
| tree | 1f9fd7cec6ffba19c76fff1e82c562fa1adae5da /net/ipv6/af_inet6.c | |
| parent | a3240f09307ac978270d423b542f229e2ccc07b8 (diff) | |
| parent | d13937116f1e82bf508a6325111b322c30c85eb9 (diff) | |
Merge tag 'v5.0-rc6' into devel
Linux 5.0-rc6
Diffstat (limited to 'net/ipv6/af_inet6.c')
| -rw-r--r-- | net/ipv6/af_inet6.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 0bfb6cc0a30a..d99753b5e39b 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -310,6 +310,7 @@ static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len, /* Check if the address belongs to the host. */ if (addr_type == IPV6_ADDR_MAPPED) { + struct net_device *dev = NULL; int chk_addr_ret; /* Binding to v4-mapped address on a v6-only socket @@ -320,9 +321,20 @@ static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len, goto out; } + rcu_read_lock(); + if (sk->sk_bound_dev_if) { + dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if); + if (!dev) { + err = -ENODEV; + goto out_unlock; + } + } + /* Reproduce AF_INET checks to make the bindings consistent */ v4addr = addr->sin6_addr.s6_addr32[3]; - chk_addr_ret = inet_addr_type(net, v4addr); + chk_addr_ret = inet_addr_type_dev_table(net, dev, v4addr); + rcu_read_unlock(); + if (!inet_can_nonlocal_bind(net, inet) && v4addr != htonl(INADDR_ANY) && chk_addr_ret != RTN_LOCAL && |