From 70099c7763b8c47a4bb1eef1c41601c602a83270 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 12 Jul 2021 07:58:07 +0200
Subject: nis: nis_local_group may read from __nisgroup[-1] (bug 28075)

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
---
 nis/nis_local_names.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'nis')

diff --git a/nis/nis_local_names.c b/nis/nis_local_names.c
index 080dcf8..218764f 100644
--- a/nis/nis_local_names.c
+++ b/nis/nis_local_names.c
@@ -31,6 +31,7 @@ nis_local_group (void)
   char *cptr;
   if (__nisgroup[0] == '\0'
       && (cptr = getenv ("NIS_GROUP")) != NULL
+      && cptr[0] != '\0'
       && strlen (cptr) < NIS_MAXNAMELEN)
     {
       char *cp = stpcpy (__nisgroup, cptr);
-- 
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