diff -Naur -x '*.orig' -x '*.rej' nss-pam-ldapd-0.8.6/common/tio.c nss-pam-ldapd-0.8.6-cve-2013-0288/common/tio.c
--- nss-pam-ldapd-0.8.6/common/tio.c	2011-03-31 22:17:33.000000000 +0200
+++ nss-pam-ldapd-0.8.6-cve-2013-0288/common/tio.c	2013-02-23 13:32:35.676954461 +0100
@@ -183,6 +183,11 @@
   while (1)
   {
     /* prepare our filedescriptorset */
+    if (fp->fd>=FD_SETSIZE)
+    {
+      errno=EBADFD;
+      return -1;
+    }
     FD_ZERO(&fdset);
     FD_SET(fp->fd,&fdset);
     /* figure out the time we need to wait */
@@ -395,6 +400,11 @@
   fd_set fdset;
   int rv;
   /* prepare our filedescriptorset */
+  if (fp->fd>=FD_SETSIZE)
+  {
+    errno=EBADFD;
+    return -1;
+  }
   FD_ZERO(&fdset);
   FD_SET(fp->fd,&fdset);
   /* set the timeout to 0 to poll */