CVE-2022-50521 — Missing Release of Memory after Effective Lifetime in Linux

CWE-401 — Missing Release of Memory after Effective LifetimeCWE-772 — Missing Release of Resource after Effective Lifetime6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.11%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedOct 7
Latest updateApr 19

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel3.0 — 4.14.303+6
▶Debianlinux/linux_kernel< 5.10.178-1+3
▶CVEListV5linux/linux99b38b4acc0d7dbbab443273577cff60080fcfad — 50ac517d6f5348b276f1f663799cf85dce521518+8
▶debiandebian/linux< linux 6.1.4-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

3
VulDB
Linux Kernel up to 6.1.1 wmi_evaluate_method memory leak (Nessus ID 302405 / WID-SEC-2025-2229)↗2026-04-19
▶
GHSA
GHSA-7v86-rcc3-mqc8: 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 m↗2025-10-07
▶
OSV
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 mem↗2025-10-07
▶

📋Vendor Advisories

2
Red Hat
kernel: platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()↗2025-10-07
▶
Debian
CVE-2022-50521: linux - In the Linux kernel, the following vulnerability has been resolved: platform/x8...↗2022
▶