Merge pull request #1593 from volatilityfoundation/mountinfo_superblock_check

Add missing pointer validation check in mountinfo

Author: ikelos

volatility3/framework/plugins/linux/mountinfo.py

@@ -93,11 +93,14 @@ def get_mountinfo(
             return None
 
         mnt_root_path = mnt_root.path()
-        superblock = mnt.get_mnt_sb()
 
         mnt_id: int = mnt.mnt_id
         parent_id: int = mnt.mnt_parent.mnt_id
 
+        superblock = mnt.get_mnt_sb()
+        if not (superblock and superblock.is_readable()):
+            return None
+
         st_dev = f"{superblock.major}:{superblock.minor}"
 
         mnt_opts: List[str] = []