Fix a crash after libusb_exit API has been misused

Resolves: #2050638

1058.patch

@@ -0,0 +1,24 @@
+From 2529a3fc4f987f93e0774af865ac7cb6557bd0c2 Mon Sep 17 00:00:00 2001
+From: Benjamin Berg <bberg@redhat.com>
+Date: Fri, 4 Feb 2022 22:50:28 +0100
+Subject: [PATCH] core: Unset device ctx if it has been destroyed
+
+Devices can outlive their context in some cases (in particular with
+python garbage collection). Guard against this happening by clearing the
+ctx pointer so that it is not pointing to uninitialized memory.
+---
+ libusb/core.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libusb/core.c b/libusb/core.c
+index 7893ac23..1c1ada14 100644
+--- a/libusb/core.c
++++ b/libusb/core.c
+@@ -2441,6 +2441,7 @@ void API_EXPORTED libusb_exit(libusb_context *ctx)
+ 	for_each_device(_ctx, dev) {
+ 		usbi_warn(_ctx, "device %d.%d still referenced",
+ 			dev->bus_number, dev->device_address);
++		DEVICE_CTX(dev) = NULL;
+ 	}
+ 
+ 	if (!list_empty(&_ctx->open_devs))

libusb1.spec

@@ -12,6 +12,9 @@ BuildRequires:  gcc
 Provides:       libusbx = %{version}-%{release}
 Obsoletes:      libusbx < %{version}-%{release}
 
+# Fix a crash after libusb_exit API has been misused
+# https://bugzilla.redhat.com/show_bug.cgi?id=2050638
+Patch0001:      https://github.com/libusb/libusb/pull/1058.patch
 
 %description
 This package provides a way for applications to access USB devices.