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CVE-2026-72346 (GCVE-0-2026-72346)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:55 – Updated: 2026-08-17 05:12
VLAI
Title
platform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume
Summary
In the Linux kernel, the following vulnerability has been resolved: platform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume The driver registers two distinct WMI devices: a control device (BITLAND_WMI_CONTROL) and an event device (BITLAND_WMI_EVENT). During the probe phase, the event device handling path returns early before initializing the platform profile device (data->pp_dev), leaving it NULL. However, the PM sleep operations are registered globally for the WMI driver and are triggered for both devices. When entering suspend, the event device invokes bitland_mifs_wmi_suspend(), which passes the uninitialized data->pp_dev (NULL) into laptop_profile_get(). This leads to a NULL pointer dereference inside dev_get_drvdata(), causing a kernel Oops and halting the suspend sequence. Fix this by adding a validity check for data->pp_dev in both the suspend and resume callbacks, safely skipping profile operations for the event device.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: dc1ec4fa86b2b8bba2b6122f2b4420217b5bae9e , < 6f2cb20d8e286218d51754f06ee219d8ce754b18 (git)
Affected: dc1ec4fa86b2b8bba2b6122f2b4420217b5bae9e , < d3666875c75eb1bc8090343fa0d6fc8fb7924356 (git)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "drivers/platform/x86/bitland-mifs-wmi.c"
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume\n\nThe driver registers two distinct WMI devices: a control device\n(BITLAND_WMI_CONTROL) and an event device (BITLAND_WMI_EVENT). During\nthe probe phase, the event device handling path returns early before\ninitializing the platform profile device (data-\u003epp_dev), leaving it\nNULL.\n\nHowever, the PM sleep operations are registered globally for the WMI\ndriver and are triggered for both devices. When entering suspend, the\nevent device invokes bitland_mifs_wmi_suspend(), which passes the\nuninitialized data-\u003epp_dev (NULL) into laptop_profile_get(). This leads\nto a NULL pointer dereference inside dev_get_drvdata(), causing a\nkernel Oops and halting the suspend sequence.\n\nFix this by adding a validity check for data-\u003epp_dev in both the suspend\nand resume callbacks, safely skipping profile operations for the event\ndevice."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:12:55.582Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/6f2cb20d8e286218d51754f06ee219d8ce754b18"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3666875c75eb1bc8090343fa0d6fc8fb7924356"
        }
      ],
      "title": "platform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72346",
    "datePublished": "2026-08-15T05:55:51.054Z",
    "dateReserved": "2026-08-09T03:40:39.920Z",
    "dateUpdated": "2026-08-17T05:12:55.582Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-09-04",
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-19T17:16:12+00:00",
      "cve": "CVE-2026-72346",
      "id": "CVE-2026-72346",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: platform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72346.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.
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  • 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.


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