diff --git a/usbutils-006-lsub-t_loop.patch b/usbutils-006-lsub-t_loop.patch
new file mode 100644
index 0000000..733449c
--- /dev/null
+++ b/usbutils-006-lsub-t_loop.patch
@@ -0,0 +1,34 @@
+diff --git a/lsusb-t.c b/lsusb-t.c
+index 074dafb..3e29072 100644
+--- a/lsusb-t.c
++++ b/lsusb-t.c
+@@ -210,8 +210,13 @@ static void read_sysfs_file_string(const char *d_name, const char *file, char *b
+ 
+ static void append_dev_interface(struct usbinterface *i, struct usbinterface *new)
+ {
+-	while (i->next)
++	while (i->next) {
++		if (i == new)
++			return;
+ 		i = i->next;
++	}
++		if (i == new)
++			return;
+ 	i->next = new;
+ }
+ 
+@@ -230,8 +235,13 @@ static void append_businterface(unsigned int busnum, struct usbinterface *new)
+ 		if (b->busnum == busnum) {
+ 			i = b->first_interface;
+ 			if (i) {
+-				while (i->next)
++				while (i->next) {
++					if (i == new)
++						return;
+ 					i = i->next;
++				}
++				if (i == new)
++					return;
+ 				i->next = new;
+ 			} else
+ 				b->first_interface = new;
diff --git a/usbutils.spec b/usbutils.spec
index c86a917..ce6fe64 100644
--- a/usbutils.spec
+++ b/usbutils.spec
@@ -1,6 +1,6 @@
 Name: usbutils
 Version: 006
-Release: 3%{?dist}
+Release: 4%{?dist}
 Source:	%{name}-%{version}.tar.gz
 URL: http://www.linux-usb.org/
 License: GPLv2+
@@ -14,6 +14,7 @@ Conflicts: hotplug < 3:2002_01_14-2
 
 #Path to usb.ids in lsusb.py should be with /hwdata/
 Patch0: usbutils-006-hwdata.patch
+Patch1: usbutils-006-lsub-t_loop.patch
 
 %description
 This package contains utilities for inspecting devices connected to a
@@ -22,6 +23,7 @@ USB bus.
 %prep
 %setup -q
 %patch0 -p1
+%patch1 -p1
 ./autogen.sh
 
 %build
@@ -43,6 +45,9 @@ make install DESTDIR=$RPM_BUILD_ROOT INSTALL="install -p"
 rm -rf $RPM_BUILD_ROOT
 
 %changelog
+* Tue Feb 26 2013 Lukáš Nykrýn <lnykryn@redhat.com> - 006-4
+- lsusb-t: make sure that interfaces are added to lists only once (#914929)
+
 * Fri Feb 15 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 006-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild