ethumb - check inoput index from stdin

fix CID 1402646

diff --git a/src/bin/ethumb_client/ethumbd_slave.c b/src/bin/ethumb_client/ethumbd_slave.c
index d7b7ff6680fd0f9a41d73f06d6c83bc02f7e24df..984cc9bafabb84ab4bebc8b1a9fd204bba82d2d2 100644 (file)
--- a/src/bin/ethumb_client/ethumbd_slave.c
+++ b/src/bin/ethumb_client/ethumbd_slave.c
@@ -667,6 +667,8 @@ _ec_op_setup(struct _Ethumbd_Child *ec)
    r = _ec_read_safe(stdin, &idx, sizeof(idx));
    if (!r)
      return 0;
+   if ((idx < 0) || (idx >= NETHUMBS))
+     return 0;
 
    r = _ec_read_safe(stdin, &type, sizeof(type));
    if (!r)