1 files changed, 9 insertions, 2 deletions

diff --git a/src/lib/libc/stdlib/strtoul.c b/src/lib/libc/stdlib/strtoul.c
index a236365d2f..2aa41b76e4 100644
--- a/src/lib/libc/stdlib/strtoul.c
+++ b/src/lib/libc/stdlib/strtoul.c
@@ -1,6 +1,6 @@
-/*      $OpenBSD: strtoul.c,v 1.8 2013/04/17 17:40:35 tedu Exp $ */
+/*      $OpenBSD: strtoul.c,v 1.9 2014/09/13 20:10:12 schwarze Exp $ */
 /*
- * Copyright (c) 1990 Regents of the University of California.
+ * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -50,6 +50,13 @@ strtoul(const char *nptr, char **endptr, int base)
         /*
          * See strtol for comments as to the logic used.
          */
+        if (base < 0 || base == 1 || base > 36) {
+                if (endptr != 0)
+                        *endptr = (char *)nptr;
+                errno = EINVAL;
+                return 0;
+        }
+
         s = nptr;
         do {
                 c = (unsigned char) *s++;