Published Sep 17, 2025Sources checked Nov 14, 2026
5.5MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2023-53355 and is rated Medium severity with a CVSS score of 5.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
What to do next
Remediation and response
Microsoft Security Response Center guidance
Vendor revision: Oct 8, 2026
Release Notes
CISA KEVNot listedBased on the latest collected catalog
EPSS0.2%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2023-53355?
In the Linux kernel, the following vulnerability has been resolved:
staging: pi433: fix memory leak with using debugfs_lookup()
When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.
This requires saving off the root directory dentry to make creation of individual device subdirectories easier.