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5.5
MEDIUM CVSS 3.1
CVE-2021-47660
Linux Kernel NTFS3 Memory Leak
Description

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix some memory leaks in an error handling path of 'log_replay()' All error handling paths lead to 'out' where many resources are freed. Do it as well here instead of a direct return, otherwise 'log', 'ra' and 'log->one_page_buf' (at least) will leak.

INFO

Published Date :

Feb. 26, 2025, 6:37 a.m.

Last Modified :

March 18, 2025, 6:50 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2021-47660 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
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
Address memory leaks in the ntfs3 file system's log_replay function.
  • Update the Linux kernel to a version where this issue is fixed.
  • Ensure all error handling paths correctly free allocated resources.
  • Review and test the 'log_replay()' function's error handling.
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-2021-47660.

URL Resource
https://git.kernel.org/stable/c/2c97519ed6b4239594c58ddacf3d0d576cf070cc Patch
https://git.kernel.org/stable/c/bc4a1d384a04c6dba9312e1421a9f9f7c03339a4 Patch
https://git.kernel.org/stable/c/d8be98ab88250dc12a98efdb703792a537b0eac3 Patch
https://git.kernel.org/stable/c/e589f9b7078e1c0191613cd736f598e81d2390de Patch
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-47660 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-2021-47660 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-2021-47660 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-2021-47660 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.

  • Initial Analysis by [email protected]

    Mar. 18, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-401
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.17.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.18 up to (excluding) 5.18.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15 up to (excluding) 5.15.46
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/2c97519ed6b4239594c58ddacf3d0d576cf070cc Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/bc4a1d384a04c6dba9312e1421a9f9f7c03339a4 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/d8be98ab88250dc12a98efdb703792a537b0eac3 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/e589f9b7078e1c0191613cd736f598e81d2390de Types: Patch
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Feb. 26, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix some memory leaks in an error handling path of 'log_replay()' All error handling paths lead to 'out' where many resources are freed. Do it as well here instead of a direct return, otherwise 'log', 'ra' and 'log->one_page_buf' (at least) will leak.
    Added Reference https://git.kernel.org/stable/c/2c97519ed6b4239594c58ddacf3d0d576cf070cc
    Added Reference https://git.kernel.org/stable/c/bc4a1d384a04c6dba9312e1421a9f9f7c03339a4
    Added Reference https://git.kernel.org/stable/c/d8be98ab88250dc12a98efdb703792a537b0eac3
    Added Reference https://git.kernel.org/stable/c/e589f9b7078e1c0191613cd736f598e81d2390de
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
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact