diff --git a/chapter10/kernel.xml b/chapter10/kernel.xml
index 157fb9f64..9042f570b 100644
--- a/chapter10/kernel.xml
+++ b/chapter10/kernel.xml
@@ -159,8 +159,6 @@ File systems  --->
 
       <screen role="nodump">Processor type and features ---&gt;
   [*] Support x2apic [CONFIG_X86_X2APIC]
-Memory Management options  ---&gt;
-  [ ] Enable userfaultfd() system call [CONFIG_USERFAULTFD]
 Device Drivers ---&gt;
   [*] PCI Support ---&gt; [CONFIG_PCI]
     [*] Message Signaled Interrupts (MSI and MSI-X) [CONFIG_PCI_MSI]
@@ -254,16 +252,6 @@ Device Drivers ---&gt;
         </listitem>
       </varlistentry>
 
-      <varlistentry>
-        <term><parameter>Enable userfaultfd() system call</parameter></term>
-        <listitem>
-          <para>If this option is enabled, a security vulnerability not
-          resolved in Linux-&linux-version; yet will be exploitable.
-          Disable this option to avoid the vulnerability.  This system call
-          is not used by any part of LFS or BLFS.</para>
-        </listitem>
-      </varlistentry>
-
     </variablelist>
 
     <para>Alternatively, <command>make oldconfig</command> may be more