1 files changed, 13 insertions, 2 deletions

diff --git a/src/lib/libc/stdlib/strtoll.c b/src/lib/libc/stdlib/strtoll.c
index 4bcc5565be..cf82c8e1a6 100644
--- a/src/lib/libc/stdlib/strtoll.c
+++ b/src/lib/libc/stdlib/strtoll.c
@@ -1,5 +1,5 @@
-/* $OpenBSD: strtoll.c,v 1.7 2013/03/28 18:09:38 martynas Exp $ */
-/*-
+/*      $OpenBSD: strtoll.c,v 1.8 2014/09/13 20:10:12 schwarze Exp $ */
+/*
  * Copyright (c) 1992 The Regents of the University of California.
  * All rights reserved.
  *
@@ -50,6 +50,17 @@ strtoll(const char *nptr, char **endptr, int base)
         int neg, any, cutlim;
 
         /*
+         * Ensure that base is between 2 and 36 inclusive, or the special
+         * value of 0.
+         */
+        if (base < 0 || base == 1 || base > 36) {
+                if (endptr != 0)
+                        *endptr = (char *)nptr;
+                errno = EINVAL;
+                return 0;
+        }
+
+        /*
          * Skip white space and pick up leading +/- sign if any.
          * If base is 0, allow 0x for hex and 0 for octal, else
          * assume decimal; if base is already 16, allow 0x.