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path: root/net/ipv6/af_inet6.c
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Diffstat (limited to 'net/ipv6/af_inet6.c')
-rw-r--r--net/ipv6/af_inet6.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 637a0e41b0aa..f9a4447ca002 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -292,6 +292,7 @@ int inet6_bind(struct socket *sock, 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
@@ -302,9 +303,20 @@ int inet6_bind(struct socket *sock, 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 (!net->ipv4.sysctl_ip_nonlocal_bind &&
!(inet->freebind || inet->transparent) &&
v4addr != htonl(INADDR_ANY) &&
@@ -333,6 +345,9 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
err = -EINVAL;
goto out_unlock;
}
+ }
+
+ if (sk->sk_bound_dev_if) {
dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if);
if (!dev) {
err = -ENODEV;