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-rw-r--r--net/ipv6/af_inet6.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index fbf533cc9dce..7f092fa912bd 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -276,6 +276,13 @@ 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) {
+ /* Binding to v4-mapped address on a v6-only socket
+ * makes no sense
+ */
+ if (np->ipv6only) {
+ err = -EINVAL;
+ goto out;
+ }
v4addr = addr->sin6_addr.s6_addr32[3];
if (inet_addr_type(net, v4addr) != RTN_LOCAL) {
err = -EADDRNOTAVAIL;