From 897799da5a94be19fd2c7226f85db046e1005dfc Mon Sep 17 00:00:00 2001
From: Consolatis <35009135+Consolatis@users.noreply.github.com>
Date: Tue, 4 Feb 2025 15:09:45 +0100
Subject: [PATCH] server: on exit, destroy backends first

This fixes a UAF caused by trying to update the xcursor in a
output destroy handler, in turn caused by destroying the backend.

Fixes: #2539
---
 src/server.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/server.c b/src/server.c
index bffea515..7093903f 100644
--- a/src/server.c
+++ b/src/server.c
@@ -757,9 +757,9 @@ server_finish(struct server *server)
 		wl_event_source_remove(sighup_source);
 	}
 	wl_display_destroy_clients(server->wl_display);
+	wlr_backend_destroy(server->backend);
 	wlr_allocator_destroy(server->allocator);
 	wlr_renderer_destroy(server->renderer);
-	wlr_backend_destroy(server->backend);
 	seat_finish(server);
 	workspaces_destroy(server);
 	wlr_scene_node_destroy(&server->scene->tree.node);