From 20c3da01f1b2bc038582eee831e4f5055b4f71ff Mon Sep 17 00:00:00 2001
From: outfoxxed <outfoxxed@outfoxxed.me>
Date: Sat, 21 Jun 2025 12:57:15 -0700
Subject: [PATCH] io/fileview: null watcher ptr after deletion to avoid UAF

Fixes #69
---
 src/io/fileview.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/io/fileview.cpp b/src/io/fileview.cpp
index b6e911f9..cbe84172 100644
--- a/src/io/fileview.cpp
+++ b/src/io/fileview.cpp
@@ -492,7 +492,10 @@ void FileView::updatePath() {
 void FileView::updateWatchedFiles() {
 	// If inotify events are sent to the watcher after deletion and deleteLater
 	// isn't used, a use after free in the QML engine will occur.
-	if (this->watcher) this->watcher->deleteLater();
+	if (this->watcher) {
+		this->watcher->deleteLater();
+		this->watcher = nullptr;
+	}
 
 	if (!this->targetPath.isEmpty() && this->bWatchChanges) {
 		qCDebug(logFileView) << "Creating watcher for" << this << "at" << this->targetPath;