CVE-2026-63839 (GCVE-0-2026-63839)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:04 – Updated: 2026-07-19 14:04
VLAI
Title
platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e521d16e76cd9ea99c585e064f4e7daf657b1451 , < 40a984dd0602e238ad893b167751620e751d1199 (git)
Affected: e521d16e76cd9ea99c585e064f4e7daf657b1451 , < 0c3887a134f191723b53e2a47e501b534c8723ee (git)
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Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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          "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."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:04:35.146Z",
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        "shortName": "Linux"
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        {
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      ],
      "title": "platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()",
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    "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"
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-21T08:07:44+00:00",
      "cve": "CVE-2026-63839",
      "id": "CVE-2026-63839",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "232",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: platform/x86: lenovo-wmi-helpers: Fix memory leak in lwmi_dev_evaluate_int()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63839.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.