CVE-2022-50521: linux kernel — Fix

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.

Is your site exposed to CVE-2022-50521?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.0 — 4.14.303
linux	linux_kernel	4.15 — 4.19.270
linux	linux_kernel	4.20 — 5.4.229
linux	linux_kernel	5.5 — 5.10.163
linux	linux_kernel	5.11 — 5.15.86
linux	linux_kernel	5.16 — 6.0.16
linux	linux_kernel	6.1 — 6.1.2

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2022-50521? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50521? +

CVE-2022-50521 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-50521? +

CVE-2022-50521 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-50521? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-0646

A denial-of-service security issue exists within the 1794-AENTR adapter due to improper memory handling of CIP protocol requests. This vulnerability …

CVE-2026-20746

Virtual attribute handling in Ping Identity PingDirectory in affected versions allows only authorized users to exhaust java memory heap when …

CVE-2026-53429

Missing Release of Memory after Effective Lifetime vulnerability in leandrocp mdex and mdex_native allows an attacker who controls a rendered …

CVE-2024-25450 8.8

imlib2 v1.9.1 was discovered to mishandle memory allocation in the function init_imlib_fonts().

CVE-2025-20133 8.6

A vulnerability in the management and VPN web servers of the Remote Access SSL VPN feature of Cisco Secure Firewall …

CVE-2025-20239 8.6

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall …

CVE-2022-50521