Update copyright dates with scripts/update-copyrights

[thirdparty/glibc.git] / gshadow / putsgent.c

diff --git a/gshadow/putsgent.c b/gshadow/putsgent.c
index 401aab63c550a68d6c6efb440c0b6bfba33b2001..f4c1e8f72791ee3e81ae81080660b8d3008c67ff 100644 (file)
--- a/gshadow/putsgent.c
+++ b/gshadow/putsgent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2013 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -13,11 +13,13 @@
 
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
+#include <errno.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <gshadow.h>
+#include <nss.h>
 
 #define _S(x)  x ? x : ""
 
@@ -29,6 +31,15 @@ putsgent (const struct sgrp *g, FILE *stream)
 {
   int errors = 0;
 
+  if (g->sg_namp == NULL || !__nss_valid_field (g->sg_namp)
+      || !__nss_valid_field (g->sg_passwd)
+      || !__nss_valid_list_field (g->sg_adm)
+      || !__nss_valid_list_field (g->sg_mem))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
   _IO_flockfile (stream);
 
   if (fprintf (stream, "%s:%s:", g->sg_namp, _S (g->sg_passwd)) < 0)