diff --git a/remoting/host/delegating_desktop_display_info_monitor.cc b/remoting/host/delegating_desktop_display_info_monitor.cc
index 814b3b4ecb5c7..7aaa4d161623f 100644
--- a/remoting/host/delegating_desktop_display_info_monitor.cc
+++ b/remoting/host/delegating_desktop_display_info_monitor.cc
@@ -29,9 +29,14 @@ void DelegatingDesktopDisplayInfoMonitor::Start() {
   }
 
   started_ = true;
+  // The underlying monitor may outlive |this| (e.g. on the Linux Wayland
+  // XDG-portal path it is owned by a base::NoDestructor singleton while |this|
+  // is per-ClientSession). AddCallback() uses AddUnsafe() and provides no way
+  // to unsubscribe, so bind to a WeakPtr to avoid a use-after-free when the
+  // underlying monitor notifies after |this| is destroyed.
   underlying_->AddCallback(base::BindRepeating(
       &DelegatingDesktopDisplayInfoMonitor::OnUnderlyingDisplayInfoChanged,
-      base::Unretained(this)));
+      weak_ptr_factory_.GetWeakPtr()));
   if (underlying_->IsStarted()) {
     if (underlying_->GetLatestDisplayInfo()) {
       // Notify that the display info is available on the next task frame to