CVE-2026-63839 (GCVE-0-2026-63839)
Vulnerability from cvelistv5
Published
2026-07-19 14:04
Modified
2026-07-19 14:04
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int() lwmi_dev_evaluate_int() leaks output.pointer when retval == NULL (found by sashiko.dev [1]). Fix it by moving `ret_obj = output.pointer' outside of the `if (retval)' block so that it is always freed by the __free cleanup callback. No functional change intended.
References
Impacted products
Vendor Product Version
Linux Linux Version: e521d16e76cd9ea99c585e064f4e7daf657b1451
Version: e521d16e76cd9ea99c585e064f4e7daf657b1451
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/lenovo/wmi-helpers.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "40a984dd0602e238ad893b167751620e751d1199",
              "status": "affected",
              "version": "e521d16e76cd9ea99c585e064f4e7daf657b1451",
              "versionType": "git"
            },
            {
              "lessThan": "0c3887a134f191723b53e2a47e501b534c8723ee",
              "status": "affected",
              "version": "e521d16e76cd9ea99c585e064f4e7daf657b1451",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/lenovo/wmi-helpers.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.10",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()\n\nlwmi_dev_evaluate_int() leaks output.pointer when retval == NULL (found\nby sashiko.dev [1]).\n\nFix it by moving `ret_obj = output.pointer\u0027 outside of the `if (retval)\u0027\nblock so that it is always freed by the __free cleanup callback.\n\nNo functional change intended."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:04:35.146Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/40a984dd0602e238ad893b167751620e751d1199"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c3887a134f191723b53e2a47e501b534c8723ee"
        }
      ],
      "title": "platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63839",
    "datePublished": "2026-07-19T14:04:35.146Z",
    "dateReserved": "2026-07-19T07:54:57.015Z",
    "dateUpdated": "2026-07-19T14:04:35.146Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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