CVE-2025-68249 (GCVE-0-2025-68249)

Vulnerability from cvelistv5 – Published: 2025-12-16 14:32 – Updated: 2026-05-11 21:49
VLAI
Title
most: usb: hdm_probe: Fix calling put_device() before device initialization
Summary
In the Linux kernel, the following vulnerability has been resolved: most: usb: hdm_probe: Fix calling put_device() before device initialization The early error path in hdm_probe() can jump to err_free_mdev before &mdev->dev has been initialized with device_initialize(). Calling put_device(&mdev->dev) there triggers a device core WARN and ends up invoking kref_put(&kobj->kref, kobject_release) on an uninitialized kobject. In this path the private struct was only kmalloc'ed and the intended release is effectively kfree(mdev) anyway, so free it directly instead of calling put_device() on an uninitialized device. This removes the WARNING and fixes the pre-initialization error path.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 97a6f772f36b7f52bcfa56a581bbd2470cffe23d , < 3509c748e79435d09e730673c8c100b7f0ebc87c (git)
Affected: 97a6f772f36b7f52bcfa56a581bbd2470cffe23d , < ad2be44882716dc3589fbc5572cc13f88ead6b24 (git)
Affected: 97a6f772f36b7f52bcfa56a581bbd2470cffe23d , < c400410fe0580dd6118ae8d60287ac9ce71a65fd (git)
Affected: 97a6f772f36b7f52bcfa56a581bbd2470cffe23d , < 6fb8fbc0aa542af5bf0fed94fa6b0edf18144f95 (git)
Affected: 97a6f772f36b7f52bcfa56a581bbd2470cffe23d , < 7d851f746067b8ee5bac9c262f326ace0a6ea253 (git)
Affected: 97a6f772f36b7f52bcfa56a581bbd2470cffe23d , < 4af0eedbdb4df7936bf43a28e31af232744d2620 (git)
Affected: 97a6f772f36b7f52bcfa56a581bbd2470cffe23d , < a8cc9e5fcb0e2eef21513a4fec888f5712cb8162 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.10.246 , ≤ 5.10.* (semver)
Unaffected: 5.15.196 , ≤ 5.15.* (semver)
Unaffected: 6.1.158 , ≤ 6.1.* (semver)
Unaffected: 6.6.115 , ≤ 6.6.* (semver)
Unaffected: 6.12.56 , ≤ 6.12.* (semver)
Unaffected: 6.17.6 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmost: usb: hdm_probe: Fix calling put_device() before device initialization\n\nThe early error path in hdm_probe() can jump to err_free_mdev before\n\u0026mdev-\u003edev has been initialized with device_initialize(). Calling\nput_device(\u0026mdev-\u003edev) there triggers a device core WARN and ends up\ninvoking kref_put(\u0026kobj-\u003ekref, kobject_release) on an uninitialized\nkobject.\n\nIn this path the private struct was only kmalloc\u0027ed and the intended\nrelease is effectively kfree(mdev) anyway, so free it directly instead\nof calling put_device() on an uninitialized device.\n\nThis removes the WARNING and fixes the pre-initialization error path."
        }
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmost: usb: hdm_probe: Fix calling put_device() before device initialization\n\nThe early error path in hdm_probe() can jump to err_free_mdev before\n\u0026mdev-\u003edev has been initialized with device_initialize(). Calling\nput_device(\u0026mdev-\u003edev) there triggers a device core WARN and ends up\ninvoking kref_put(\u0026kobj-\u003ekref, kobject_release) on an uninitialized\nkobject.\n\nIn this path the private struct was only kmalloc\u0027ed and the intended\nrelease is effectively kfree(mdev) anyway, so free it directly instead\nof calling put_device() on an uninitialized device.\n\nThis removes the WARNING and fixes the pre-initialization error path."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmost: usb: hdm_probe: Corregir la llamada a put_device() antes de la inicializaci\u00f3n del dispositivo\n\nLa ruta de error temprana en hdm_probe() puede saltar a err_free_mdev antes de que \u0026mdev -\u003e dev haya sido inicializado con device_initialize(). Llamar a put_device(\u0026mdev -\u003e dev) all\u00ed dispara una ADVERTENCIA del n\u00facleo del dispositivo y termina invocando kref_put(\u0026kobj -\u003e kref, kobject_release) en un kobject no inicializado.\n\nEn esta ruta, a la estructura privada solo se le asign\u00f3 memoria con kmalloc y la liberaci\u00f3n prevista es efectivamente kfree(mdev) de todos modos, as\u00ed que lib\u00e9ralo directamente en lugar de llamar a put_device() en un dispositivo no inicializado.\n\nEsto elimina la ADVERTENCIA y corrige la ruta de error de pre-inicializaci\u00f3n."
          }
        ],
        "id": "CVE-2025-68249",
        "lastModified": "2026-10-14T13:10:00.187",
        "metrics": {},
        "published": "2025-12-16T15:15:54.193",
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    "redhat_vex": {
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      "current_release_date": "2026-06-30T10:19:43+00:00",
      "cve": "CVE-2025-68249",
      "id": "CVE-2025-68249",
      "initial_release_date": "2025-12-16T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: most: usb: hdm_probe: Fix calling put_device() before device initialization",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68249.json",
      "version": "3"
    }
  }
}



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