Fix #8558

kittens/panel/main.py

@@ -31,6 +31,7 @@
 from kitty.os_window_size import WindowSizeData, edge_spacing
 from kitty.types import LayerShellConfig
 from kitty.typing import BossType, EdgeLiteral
+from kitty.utils import log_error
 
 OPTIONS = r'''
 --lines
@@ -302,7 +303,11 @@ def layer_shell_config(opts: PanelCLIOptions) -> LayerShellConfig:
 
 def handle_single_instance_command(boss: BossType, sys_args: Sequence[str], environ: Mapping[str, str], notify_on_os_window_death: str | None = '') -> None:
     from kitty.tabs import SpecialWindow
-    args, items = parse_panel_args(list(sys_args[1:]))
+    try:
+        args, items = parse_panel_args(list(sys_args[1:]))
+    except BaseException as e:
+        log_error(f'Invalid arguments received over single instance socket: {sys_args} with error: {e}')
+        return
     if args.toggle_visibility and boss.os_window_map:
         for os_window_id in boss.os_window_map:
             toggle_os_window_visibility(os_window_id)

kitty/boss.py

@@ -848,7 +848,12 @@ def peer_message_received(self, msg_bytes: bytes, peer_id: int, is_remote_contro
             from .cli_stub import CLIOptions
             startup_id = data['environ'].get('DESKTOP_STARTUP_ID', '')
             activation_token = data['environ'].get('XDG_ACTIVATION_TOKEN', '')
-            args, rest = parse_args(list(data['args'][1:]), result_class=CLIOptions)
+            try:
+                args, rest = parse_args(list(data['args'][1:]), result_class=CLIOptions)
+            except BaseException as e:
+                self.show_error(_('Invalid single instance command received'), _('The command: {0} is invalid with error: {1}').format(
+                    data['args'], e))
+                return None
             cmdline_args_for_open = data.get('cmdline_args_for_open')
             if cmdline_args_for_open:
                 self.launch_urls(*cmdline_args_for_open, no_replace_window=True)