Bug 2402197 (CVE-2022-50521) - CVE-2022-50521 kernel: platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()
Summary: CVE-2022-50521 kernel: platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[...
Keywords:
Status: NEW
Alias: CVE-2022-50521
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-07 16:02 UTC by OSIDB Bzimport
Modified: 2025-10-07 20:57 UTC (History)
0 users

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Description OSIDB Bzimport 2025-10-07 16:02:23 UTC 
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.
Comment 1 Jon Moroney 2025-10-07 20:54:22 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100704-CVE-2022-50521-fd26@gregkh/T
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