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5.5
MEDIUM CVSS 3.1
CVE-2022-49591
Microchip Linux Kernel Reference Count Leak Vulnerability
Description

In the Linux kernel, the following vulnerability has been resolved: net: dsa: microchip: ksz_common: Fix refcount leak bug In ksz_switch_register(), we should call of_node_put() for the reference returned by of_get_child_by_name() which has increased the refcount.

INFO

Published Date :

Feb. 26, 2025, 7:01 a.m.

Last Modified :

March 10, 2025, 8:23 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2022-49591 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
Fix a reference count leak in the DSA driver by calling of_node_put.
  • Apply the kernel patch for the DSA driver.
  • Recompile the kernel with the fix.
  • Deploy the updated kernel.
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-2022-49591.

URL Resource
https://git.kernel.org/stable/c/4165e02716518bbbe9c9104b39530d40928bc7ce Mailing List Patch
https://git.kernel.org/stable/c/88ec2ff42da3ac93b2437dc52fe25cd4372148e6 Mailing List Patch
https://git.kernel.org/stable/c/a14bd7475452c51835dd5a0cee4c8fa48dd0b539 Mailing List 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-2022-49591 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-2022-49591 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-2022-49591 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-2022-49591 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. 10, 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 NVD-CWE-Other
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.19:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.19:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.19:rc7:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.9 from (excluding) 5.15.58 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 from (excluding) 5.18.15
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/4165e02716518bbbe9c9104b39530d40928bc7ce Types: Mailing List, Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/88ec2ff42da3ac93b2437dc52fe25cd4372148e6 Types: Mailing List, Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/a14bd7475452c51835dd5a0cee4c8fa48dd0b539 Types: Mailing List, 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: net: dsa: microchip: ksz_common: Fix refcount leak bug In ksz_switch_register(), we should call of_node_put() for the reference returned by of_get_child_by_name() which has increased the refcount.
    Added Reference https://git.kernel.org/stable/c/4165e02716518bbbe9c9104b39530d40928bc7ce
    Added Reference https://git.kernel.org/stable/c/88ec2ff42da3ac93b2437dc52fe25cd4372148e6
    Added Reference https://git.kernel.org/stable/c/a14bd7475452c51835dd5a0cee4c8fa48dd0b539
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