CVE-2022-50521

MEDIUM

Linux Kernel - Use-After-Free in mxm-wmi ACPI Buffer Handling

Title source: llm
STIX 2.1

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.

References (8)

Core 8

Scores

CVSS v3 5.5
EPSS 0.0014
EPSS Percentile 4.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-401
Status published
Products (26)
linux/Kernel 3.0.0 - 4.14.303linux
linux/Kernel 4.15.0 - 4.19.270linux
linux/Kernel 4.20.0 - 5.4.229linux
linux/Kernel 5.11.0 - 5.15.86linux
linux/Kernel 5.16.0 - 6.0.16linux
linux/Kernel 5.5.0 - 5.10.163linux
linux/Kernel 6.1.0 - 6.1.2linux
Linux/Linux < 3.0
Linux/Linux 3.0
Linux/Linux 4.14.303 - 4.14.*
... and 16 more
Published Oct 07, 2025
Tracked Since Feb 18, 2026