for YP lookups, avoid names longer than MAXHOSTNAMELEN

1 files changed, 3 insertions, 1 deletions

diff --git a/src/lib/libc/net/gethostnamadr.c b/src/lib/libc/net/gethostnamadr.c
index b11bff6b86..7fb148bf52 100644
--- a/src/lib/libc/net/gethostnamadr.c
+++ b/src/lib/libc/net/gethostnamadr.c
@@ -52,7 +52,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$OpenBSD: gethostnamadr.c,v 1.28 1998/01/11 19:32:10 weingart Exp $";
+static char rcsid[] = "$OpenBSD: gethostnamadr.c,v 1.29 1998/01/20 18:28:33 deraadt Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
@@ -953,6 +953,8 @@ _yp_gethtbyname(name)
         static char *__ypcurrent;
         int __ypcurrentlen, r;
 
+        if (strlen(name) >= MAXHOSTNAMELEN)
+                return (NULL);
         if (!__ypdomain) {
                 if (_yp_check(&__ypdomain) == 0)
                         return (hp);