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path: root/pkg/tcpip/transport/icmp/endpoint.go
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Diffstat (limited to 'pkg/tcpip/transport/icmp/endpoint.go')
-rw-r--r--pkg/tcpip/transport/icmp/endpoint.go11
1 files changed, 11 insertions, 0 deletions
diff --git a/pkg/tcpip/transport/icmp/endpoint.go b/pkg/tcpip/transport/icmp/endpoint.go
index 00497bf07..1e519085d 100644
--- a/pkg/tcpip/transport/icmp/endpoint.go
+++ b/pkg/tcpip/transport/icmp/endpoint.go
@@ -688,9 +688,20 @@ func (e *endpoint) bindLocked(addr tcpip.FullAddress) tcpip.Error {
return nil
}
+func (e *endpoint) isBroadcastOrMulticast(nicID tcpip.NICID, addr tcpip.Address) bool {
+ return addr == header.IPv4Broadcast ||
+ header.IsV4MulticastAddress(addr) ||
+ header.IsV6MulticastAddress(addr) ||
+ e.stack.IsSubnetBroadcast(nicID, e.NetProto, addr)
+}
+
// Bind binds the endpoint to a specific local address and port.
// Specifying a NIC is optional.
func (e *endpoint) Bind(addr tcpip.FullAddress) tcpip.Error {
+ if len(addr.Addr) != 0 && e.isBroadcastOrMulticast(addr.NIC, addr.Addr) {
+ return &tcpip.ErrBadLocalAddress{}
+ }
+
e.mu.Lock()
defer e.mu.Unlock()