From efbc410c4d3507f84f304e3385e3b9473b3fd1be Mon Sep 17 00:00:00 2001
From: Andrew Case <andrew@dfir.org>
Date: Fri, 31 Jan 2025 21:43:32 +0000
Subject: [PATCH] Add missing pointer validation check in mountinfo

---
 volatility3/framework/plugins/linux/mountinfo.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/volatility3/framework/plugins/linux/mountinfo.py b/volatility3/framework/plugins/linux/mountinfo.py
index 47d8705c8..c56ced489 100644
--- a/volatility3/framework/plugins/linux/mountinfo.py
+++ b/volatility3/framework/plugins/linux/mountinfo.py
@@ -93,11 +93,14 @@ class MountInfo(plugins.PluginInterface):
             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] = []