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authorFlorian Weimer <fweimer@redhat.com>2021-07-12 07:58:07 +0200
committerFlorian Weimer <fweimer@redhat.com>2021-07-12 07:58:07 +0200
commit70099c7763b8c47a4bb1eef1c41601c602a83270 (patch)
tree8f254e04292431e24e15d8d3f702d14670d827e9
parent83b7008e11f6d149f1926970b7c21cc50ce536ed (diff)
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nis: nis_local_group may read from __nisgroup[-1] (bug 28075)
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
-rw-r--r--nis/nis_local_names.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/nis/nis_local_names.c b/nis/nis_local_names.c
index 080dcf88bd..218764f32e 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);