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CVE-2023-53173
tty: pcn_uart: fix memory leak with using debugfs_lookup()
Description

In the Linux kernel, the following vulnerability has been resolved: tty: pcn_uart: 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.

INFO

Published Date :

Sept. 15, 2025, 2:15 p.m.

Last Modified :

Sept. 15, 2025, 3:22 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2023-53173 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Fix memory leaks by using debugfs_lookup_and_remove() to manage debugfs entries.
  • Use debugfs_lookup_and_remove() instead of debugfs_lookup().
  • Ensure dput() is called on debugfs_lookup() results.
  • Apply kernel patches to fix memory leaks.
  • Update your Linux kernel to the latest version.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-53173.

URL Resource
https://git.kernel.org/stable/c/04a189c720aa2b6091442113ce9b9bc93552dff8
https://git.kernel.org/stable/c/139769c4bd8273b5e3f85ea474aa37018fe7e436
https://git.kernel.org/stable/c/4459d1e7bd0421b3b6fcd745773d8823f71615ef
https://git.kernel.org/stable/c/cf042964c2fa72950bbbf25b2cdd732b873e89db
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-53173 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-53173 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-53173 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-53173 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 15, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: tty: pcn_uart: 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.
    Added Reference https://git.kernel.org/stable/c/04a189c720aa2b6091442113ce9b9bc93552dff8
    Added Reference https://git.kernel.org/stable/c/139769c4bd8273b5e3f85ea474aa37018fe7e436
    Added Reference https://git.kernel.org/stable/c/4459d1e7bd0421b3b6fcd745773d8823f71615ef
    Added Reference https://git.kernel.org/stable/c/cf042964c2fa72950bbbf25b2cdd732b873e89db
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.