CVE-2025-68249 (GCVE-0-2025-68249)
Vulnerability from cvelistv5 – Published: 2025-12-16 14:32 – Updated: 2026-05-11 21:49
VLAI
EPSS
VEX
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
References
7 references
Impacted products
2 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 | |
| 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 |
{
"containers": {
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"programFiles": [
"drivers/most/most_usb.c"
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},
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"programFiles": [
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],
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"vendor": "Linux",
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{
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"version": "5.9"
},
{
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"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.10.246",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.196",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.158",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.115",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.56",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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{
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{
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}
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],
"descriptions": [
{
"lang": "en",
"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."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:49:43.047Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
{
"url": "https://git.kernel.org/stable/c/3509c748e79435d09e730673c8c100b7f0ebc87c"
},
{
"url": "https://git.kernel.org/stable/c/ad2be44882716dc3589fbc5572cc13f88ead6b24"
},
{
"url": "https://git.kernel.org/stable/c/c400410fe0580dd6118ae8d60287ac9ce71a65fd"
},
{
"url": "https://git.kernel.org/stable/c/6fb8fbc0aa542af5bf0fed94fa6b0edf18144f95"
},
{
"url": "https://git.kernel.org/stable/c/7d851f746067b8ee5bac9c262f326ace0a6ea253"
},
{
"url": "https://git.kernel.org/stable/c/4af0eedbdb4df7936bf43a28e31af232744d2620"
},
{
"url": "https://git.kernel.org/stable/c/a8cc9e5fcb0e2eef21513a4fec888f5712cb8162"
}
],
"title": "most: usb: hdm_probe: Fix calling put_device() before device initialization",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
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"datePublished": "2025-12-16T14:32:16.370Z",
"dateReserved": "2025-12-16T13:41:40.266Z",
"dateUpdated": "2026-05-11T21:49:43.047Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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"date": "2026-10-30",
"epss": "0.00191",
"percentile": "0.08802"
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{
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"descriptions": [
{
"lang": "en",
"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",
"references": [
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"url": "https://git.kernel.org/stable/c/3509c748e79435d09e730673c8c100b7f0ebc87c"
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},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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{
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}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "None",
"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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