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CVE-2022-50521
platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()
Description

In the Linux kernel, the following vulnerability has been resolved: platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]() The ACPI buffer memory (out.pointer) returned by wmi_evaluate_method() is not freed after the call, so it leads to memory leak. The method results in ACPI buffer is not used, so just pass NULL to wmi_evaluate_method() which fixes the memory leak.

INFO

Published Date :

Oct. 7, 2025, 4:15 p.m.

Last Modified :

Oct. 8, 2025, 7:38 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2022-50521 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
Free ACPI buffer memory returned by wmi_evaluate_method() to fix memory leak.
  • Ensure ACPI buffer memory is freed after wmi_evaluate_method() calls.
  • Pass NULL to wmi_evaluate_method() when results are not used.
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-2022-50521.

URL Resource
https://git.kernel.org/stable/c/14bb4bde3b7b2584734b13747b345caeeb41bea3
https://git.kernel.org/stable/c/17cd8c46cbec4e6ad593fb9159928b8e7608c11a
https://git.kernel.org/stable/c/379e7794c5e7485193d25d73614fbbd1e1387f6f
https://git.kernel.org/stable/c/3cf81501356c9e898ad94b2369ffc805f83f7d7b
https://git.kernel.org/stable/c/50ac517d6f5348b276f1f663799cf85dce521518
https://git.kernel.org/stable/c/5b0f81b0808235967868e01336c976e840217108
https://git.kernel.org/stable/c/727cc0147f5066e359aca65cc6cc5e6d64cc15d8
https://git.kernel.org/stable/c/87426ce3bd57ad414b6e2436434ef8128986a9a5
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-50521 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-2022-50521 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-2022-50521 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-2022-50521 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

    Oct. 07, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]() The ACPI buffer memory (out.pointer) returned by wmi_evaluate_method() is not freed after the call, so it leads to memory leak. The method results in ACPI buffer is not used, so just pass NULL to wmi_evaluate_method() which fixes the memory leak.
    Added Reference https://git.kernel.org/stable/c/14bb4bde3b7b2584734b13747b345caeeb41bea3
    Added Reference https://git.kernel.org/stable/c/17cd8c46cbec4e6ad593fb9159928b8e7608c11a
    Added Reference https://git.kernel.org/stable/c/379e7794c5e7485193d25d73614fbbd1e1387f6f
    Added Reference https://git.kernel.org/stable/c/3cf81501356c9e898ad94b2369ffc805f83f7d7b
    Added Reference https://git.kernel.org/stable/c/50ac517d6f5348b276f1f663799cf85dce521518
    Added Reference https://git.kernel.org/stable/c/5b0f81b0808235967868e01336c976e840217108
    Added Reference https://git.kernel.org/stable/c/727cc0147f5066e359aca65cc6cc5e6d64cc15d8
    Added Reference https://git.kernel.org/stable/c/87426ce3bd57ad414b6e2436434ef8128986a9a5
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.