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Add missing pointer verification

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This commit is contained in:
Gustavo Moreira
2024-09-13 16:09:49 +10:00
parent 867c8e3f1b
commit aecd31f095
1 changed files with 3 additions and 3 deletions
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volatility3/framework/symbols/linux/extensions/__init__.py
+3 -3
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@@ -847,7 +847,7 @@ class dentry(objects.StructType):
"""Returns the inode associated with this dentry"""
inode_ptr = self.d_inode
if not (inode_ptr and inode_ptr.is_valid()):
if not (inode_ptr and inode_ptr.is_readable() and inode_ptr.is_valid()):
return None
return inode_ptr.dereference()
@@ -880,14 +880,14 @@ class struct_file(objects.StructType):
# Try first the cached value, kernels +3.9
inode_ptr = self.f_inode
if not (inode_ptr and inode_ptr.is_valid()):
if not (inode_ptr and inode_ptr.is_readable() and inode_ptr.is_valid()):
dentry_ptr = self.get_dentry()
if not (dentry_ptr and dentry_ptr.is_readable()):
return None
inode_ptr = dentry_ptr.d_inode
if not (inode_ptr and inode_ptr.is_valid()):
if not (inode_ptr and inode_ptr.is_readable() and inode_ptr.is_valid()):
return None
return inode_ptr.dereference()