Add proper exception handling in file descriptor enumeration

volatility3/framework/symbols/linux/__init__.py

@@ -339,15 +339,23 @@ class LinuxUtilities(interfaces.configuration.VersionableInterface):
         symbol_table: str,
         task: interfaces.objects.ObjectInterface,
     ):
-        # task.files can be null
-        if not (task.files and task.files.is_readable()):
+        try:
+            files = task.files
+        except exceptions.InvalidAddressException:
+            return None
+
+        if not files.is_readable():
+            return None
+
+        try:
+            fd_table = files.get_fds()
+        except exceptions.InvalidAddressException:
             return None
 
-        fd_table = task.files.get_fds()
         if fd_table == 0:
             return None
 
-        max_fds = task.files.get_max_fds()
+        max_fds = files.get_max_fds()
 
         # corruption check
         if max_fds > 500000: