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CVE-2022-50521— platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mxm_wmi_call_mx[ds

AI Predicted 5.3 Difficulty: Trivial EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 99b38b4acc0d7dbbab443273577cff60080fcfad< 50ac517d6f5348b276f1f663799cf85dce521518 affected
99b38b4acc0d7dbbab443273577cff60080fcfad< 5b0f81b0808235967868e01336c976e840217108 affected
99b38b4acc0d7dbbab443273577cff60080fcfad< 14bb4bde3b7b2584734b13747b345caeeb41bea3 affected
99b38b4acc0d7dbbab443273577cff60080fcfad< 17cd8c46cbec4e6ad593fb9159928b8e7608c11a affected
99b38b4acc0d7dbbab443273577cff60080fcfad< 3cf81501356c9e898ad94b2369ffc805f83f7d7b affected
99b38b4acc0d7dbbab443273577cff60080fcfad< 379e7794c5e7485193d25d73614fbbd1e1387f6f affected
99b38b4acc0d7dbbab443273577cff60080fcfad< 87426ce3bd57ad414b6e2436434ef8128986a9a5 affected
99b38b4acc0d7dbbab443273577cff60080fcfad< 727cc0147f5066e359aca65cc6cc5e6d64cc15d8 affected
… +10 more rows
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I. Basic Information for CVE-2022-50521

Vulnerability Information
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Vulnerability Title
platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mxm_wmi_call_mx[ds|mx]函数未释放ACPI缓冲区内存，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 99b38b4acc0d7dbbab443273577cff60080fcfad ~ 50ac517d6f5348b276f1f663799cf85dce521518 -
Linux Linux 3.0 -

II. Public POCs for CVE-2022-50521

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III. Intelligence Information for CVE-2022-50521

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Patches & Fixes for CVE-2022-50521 (8)

Same Patch Batch · Linux · 2025-10-07 · 118 CVEs total

CVE-2023-53629 9.8 CRITICAL fs: dlm: fix use after free in midcomms commit
CVE-2023-53630 8.8 HIGH iommufd: Fix unpinning of pages when an access is present
CVE-2023-53676 8.8 HIGH scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()
CVE-2023-53675 8.8 HIGH scsi: ses: Fix possible desc_ptr out-of-bounds accesses
CVE-2023-53673 8.8 HIGH Bluetooth: hci_event: call disconnect callback before deleting conn
CVE-2023-53679 8.3 HIGH wifi: mt7601u: fix an integer underflow
CVE-2023-53635 8.2 HIGH netfilter: conntrack: fix wrong ct->timeout value
CVE-2023-53669 7.8 HIGH tcp: fix skb_copy_ubufs() vs BIG TCP
CVE-2022-50555 7.8 HIGH tipc: fix a null-ptr-deref in tipc_topsrv_accept
CVE-2023-53627 7.8 HIGH scsi: hisi_sas: Grab sas_dev lock when traversing the members of sas_dev.list
CVE-2023-53626 7.8 HIGH ext4: fix possible double unlock when moving a directory
CVE-2023-53660 7.8 HIGH bpf, cpumap: Handle skb as well when clean up ptr_ring
CVE-2023-53659 7.8 HIGH iavf: Fix out-of-bounds when setting channels on remove
CVE-2023-53643 7.8 HIGH nvme-tcp: don't access released socket during error recovery
CVE-2023-53619 7.8 HIGH netfilter: conntrack: Avoid nf_ct_helper_hash uses after free
CVE-2023-53645 7.8 HIGH bpf: Make bpf_refcount_acquire fallible for non-owning refs
CVE-2023-53646 7.8 HIGH drm/i915/perf: add sentinel to xehp_oa_b_counters
CVE-2022-50528 7.8 HIGH drm/amdkfd: Fix memory leakage
CVE-2022-50518 7.8 HIGH parisc: Fix locking in pdc_iodc_print() firmware call
CVE-2023-53651 7.8 HIGH Input: exc3000 - properly stop timer on shutdown

Showing top 20 of 118 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50521

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