diff --git a/dnsmasq-2.77-CVE-2017-14492.patch b/dnsmasq-2.77-CVE-2017-14492.patch
new file mode 100644
index 0000000..1430b4c
--- /dev/null
+++ b/dnsmasq-2.77-CVE-2017-14492.patch
@@ -0,0 +1,30 @@
+From 24036ea507862c7b7898b68289c8130f85599c10 Mon Sep 17 00:00:00 2001
+From: Simon Kelley <simon@thekelleys.org.uk>
+Date: Mon, 25 Sep 2017 18:47:15 +0100
+Subject: [PATCH 3/9] Security fix, CVE-2017-14492, DHCPv6 RA heap overflow.
+
+Fix heap overflow in IPv6 router advertisement code.
+This is a potentially serious security hole, as a
+crafted RA request can overflow a buffer and crash or
+control dnsmasq. Attacker must be on the local network.
+---
+ src/radv.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/radv.c b/src/radv.c
+index 1032189..9b7e52c 100644
+--- a/src/radv.c
++++ b/src/radv.c
+@@ -198,6 +198,9 @@ void icmp6_packet(time_t now)
+       /* look for link-layer address option for logging */
+       if (sz >= 16 && packet[8] == ICMP6_OPT_SOURCE_MAC && (packet[9] * 8) + 8 <= sz)
+ 	{
++	  if ((packet[9] * 8 - 2) * 3 - 1 >= MAXDNAME) {
++	    return;
++	  }
+ 	  print_mac(daemon->namebuff, &packet[10], (packet[9] * 8) - 2);
+ 	  mac = daemon->namebuff;
+ 	}
+-- 
+2.9.5
+
diff --git a/dnsmasq.spec b/dnsmasq.spec
index 013ad61..150234e 100644
--- a/dnsmasq.spec
+++ b/dnsmasq.spec
@@ -24,6 +24,7 @@ Source1:        %{name}.service
 
 Patch1:         dnsmasq-2.77-CVE-2017-13704.patch
 Patch2:         dnsmasq-2.77-CVE-2017-14491.patch
+Patch3:         dnsmasq-2.77-CVE-2017-14492.patch
 
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
@@ -60,6 +61,7 @@ query/remove a DHCP server's leases.
 %setup -q -n %{name}-%{version}%{?extraversion}
 %patch1 -p1 -b .CVE-2017-13704
 %patch2 -p1 -b .CVE-2017-14491
+%patch3 -p1 -b .CVE-2017-14492
 
 # use /var/lib/dnsmasq instead of /var/lib/misc
 for file in dnsmasq.conf.example man/dnsmasq.8 man/es/dnsmasq.8 src/config.h; do
@@ -148,6 +150,7 @@ rm -rf $RPM_BUILD_ROOT
 %changelog
 * Mon Oct 02 2017 Petr Menšík <pemensik@redhat.com> - 2.77-8
 - Security fix, CVE-2017-14491 DNS heap buffer overflow
+- Security fix, CVE-2017-14492 DHCPv6 RA heap overflow
 
 * Thu Sep 14 2017 Petr Menšík <pemensik@redhat.com> - 2.77-7
 - Fix CVE-2017-13704