CVE-2022-50521 (GCVE-0-2022-50521)
Vulnerability from cvelistv5
Published
2025-10-07 15:19
Modified
2025-10-07 15:19
Severity ?
Summary
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
Impacted products
Vendor Product Version
Linux Linux Version: 99b38b4acc0d7dbbab443273577cff60080fcfad
Version: 99b38b4acc0d7dbbab443273577cff60080fcfad
Version: 99b38b4acc0d7dbbab443273577cff60080fcfad
Version: 99b38b4acc0d7dbbab443273577cff60080fcfad
Version: 99b38b4acc0d7dbbab443273577cff60080fcfad
Version: 99b38b4acc0d7dbbab443273577cff60080fcfad
Version: 99b38b4acc0d7dbbab443273577cff60080fcfad
Version: 99b38b4acc0d7dbbab443273577cff60080fcfad
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/mxm-wmi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.0"
            },
            {
              "lessThan": "3.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.303",
                  "versionStartIncluding": "3.0",
                  "vulnerable": true
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                  "vulnerable": true
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()\n\nThe ACPI buffer memory (out.pointer) returned by wmi_evaluate_method()\nis not freed after the call, so it leads to memory leak.\n\nThe method results in ACPI buffer is not used, so just pass NULL to\nwmi_evaluate_method() which fixes the memory leak."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-07T15:19:15.213Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/50ac517d6f5348b276f1f663799cf85dce521518"
        },
        {
          "url": "https://git.kernel.org/stable/c/5b0f81b0808235967868e01336c976e840217108"
        },
        {
          "url": "https://git.kernel.org/stable/c/14bb4bde3b7b2584734b13747b345caeeb41bea3"
        },
        {
          "url": "https://git.kernel.org/stable/c/17cd8c46cbec4e6ad593fb9159928b8e7608c11a"
        },
        {
          "url": "https://git.kernel.org/stable/c/3cf81501356c9e898ad94b2369ffc805f83f7d7b"
        },
        {
          "url": "https://git.kernel.org/stable/c/379e7794c5e7485193d25d73614fbbd1e1387f6f"
        },
        {
          "url": "https://git.kernel.org/stable/c/87426ce3bd57ad414b6e2436434ef8128986a9a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/727cc0147f5066e359aca65cc6cc5e6d64cc15d8"
        }
      ],
      "title": "platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50521",
    "datePublished": "2025-10-07T15:19:15.213Z",
    "dateReserved": "2025-10-07T15:15:38.663Z",
    "dateUpdated": "2025-10-07T15:19:15.213Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50521\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-07T16:15:35.883\",\"lastModified\":\"2025-10-08T19:38:32.610\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nplatform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()\\n\\nThe ACPI buffer memory (out.pointer) returned by wmi_evaluate_method()\\nis not freed after the call, so it leads to memory leak.\\n\\nThe method results in ACPI buffer is not used, so just pass NULL to\\nwmi_evaluate_method() which fixes the memory leak.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/14bb4bde3b7b2584734b13747b345caeeb41bea3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/17cd8c46cbec4e6ad593fb9159928b8e7608c11a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/379e7794c5e7485193d25d73614fbbd1e1387f6f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3cf81501356c9e898ad94b2369ffc805f83f7d7b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/50ac517d6f5348b276f1f663799cf85dce521518\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5b0f81b0808235967868e01336c976e840217108\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/727cc0147f5066e359aca65cc6cc5e6d64cc15d8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/87426ce3bd57ad414b6e2436434ef8128986a9a5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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