arping: validate am->interfaces before check address
May cause pointers point to unexpected non-zero addresses if not
validate vec
Type: fix
@@ -554,7 +554,8 @@ arping_neighbor_probe_dst (vlib_main_t *vm, arping_args_t *args)
arping_intf_t aif;
/* Disallow multiple sends on the same interface for now. Who needs it? */
- if (am->interfaces && (am->interfaces[args->sw_if_index] != 0))
+ if ((vec_len (am->interfaces) > args->sw_if_index) &&
+ (am->interfaces[args->sw_if_index] != 0))
{
error = clib_error_return (
0, "arping command is in progress for the same interface. "
