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CVE-2026-72346

Estado: RecibidaSin puntuar—

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.

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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.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-72346",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "dc1ec4fa86b2b8bba2b6122f2b4420217b5bae9e",
              "lessThan": "6f2cb20d8e286218d51754f06ee219d8ce754b18",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "dc1ec4fa86b2b8bba2b6122f2b4420217b5bae9e",
              "lessThan": "d3666875c75eb1bc8090343fa0d6fc8fb7924356",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/platform/x86/bitland-mifs-wmi.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "7.1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/platform/x86/bitland-mifs-wmi.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:07.963",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/6f2cb20d8e286218d51754f06ee219d8ce754b18",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d3666875c75eb1bc8090343fa0d6fc8fb7924356",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "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->pp_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->pp_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->pp_dev in both the suspend\nand resume callbacks, safely skipping profile operations for the event\ndevice."
    }
  ],
  "lastModified": "2026-08-17T06:18:38.557",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}