diff --git a/repos/libports/src/lib/qemu-usb/host.cc b/repos/libports/src/lib/qemu-usb/host.cc
index 233435aa07..624bf1a8ed 100644
--- a/repos/libports/src/lib/qemu-usb/host.cc
+++ b/repos/libports/src/lib/qemu-usb/host.cc
@@ -269,7 +269,8 @@ struct Usb_host_device : List<Usb_host_device>::Element
 
 		for (unsigned i = 0; i < cdescr.num_interfaces; i++) {
 			try { usb_raw.release_interface(i); }
-			catch (Usb::Session::Device_not_found) { return; }
+			catch (Usb::Session::Device_not_found)    { return; }
+			catch (Usb::Session::Interface_not_found) { return; }
 		}
 	}
 
@@ -287,7 +288,7 @@ struct Usb_host_device : List<Usb_host_device>::Element
 				usb_raw.claim_interface(i);
 			} catch (Usb::Session::Interface_already_claimed) {
 				result = false;
-			}
+			} catch (Usb::Session::Interface_not_found) { }
 		}
 
 		if (!result) error("device already claimed");
@@ -675,22 +676,24 @@ struct Usb_host_device : List<Usb_host_device>::Element
 		catch (Usb::Session::Device_not_found) { return; }
 
 		for (unsigned i = 0; i < cdescr.num_interfaces; i++) {
-			Usb::Interface_descriptor iface;
-			uint8_t const altsetting = udev->altsetting[i];
-			usb_raw.interface_descriptor(i, altsetting, &iface);
-			for (unsigned k = 0; k < iface.num_endpoints; k++) {
-				Usb::Endpoint_descriptor endp;
-				usb_raw.endpoint_descriptor(i, altsetting, k, &endp);
+			try {
+				Usb::Interface_descriptor iface;
+				uint8_t const altsetting = udev->altsetting[i];
+				usb_raw.interface_descriptor(i, altsetting, &iface);
+				for (unsigned k = 0; k < iface.num_endpoints; k++) {
+					Usb::Endpoint_descriptor endp;
+					usb_raw.endpoint_descriptor(i, altsetting, k, &endp);
 
-				int const pid      = (endp.address & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
-				int const ep       = (endp.address & 0xf);
-				uint8_t const type = (endp.attributes & 0x3);
+					int const pid      = (endp.address & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
+					int const ep       = (endp.address & 0xf);
+					uint8_t const type = (endp.attributes & 0x3);
 
-				usb_ep_set_max_packet_size(udev, pid, ep, endp.max_packet_size);
-				usb_ep_set_type(udev, pid, ep, type);
-				usb_ep_set_ifnum(udev, pid, ep, i);
-				usb_ep_set_halted(udev, pid, ep, 0);
-			}
+					usb_ep_set_max_packet_size(udev, pid, ep, endp.max_packet_size);
+					usb_ep_set_type(udev, pid, ep, type);
+					usb_ep_set_ifnum(udev, pid, ep, i);
+					usb_ep_set_halted(udev, pid, ep, 0);
+				}
+			} catch (Usb::Session::Interface_not_found) { }
 		}
 	}
 };