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
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6992 records in the last 180 days details
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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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/bitland-mifs-wmi.c"
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          "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"
      },
      "references": [
        {
          "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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                "vendor": "Linux",
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          }
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        "cveTags": [],
        "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."
          }
        ],
        "id": "CVE-2026-72346",
        "lastModified": "2026-08-17T06:18:38.557",
        "metrics": {},
        "published": "2026-08-15T06:22:07.963",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          }
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        "vulnStatus": "Received"
      }
    },
    "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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