FKIE_CVE-2025-40024
Vulnerability from fkie_nvd - Published: 2025-10-24 13:15 - Updated: 2026-10-19 21:10| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"kernel/vhost_task.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "82a1463c968b1a6ae598a4f2fcef17b71bb7d3a0",
"status": "affected",
"version": "f9010dbdce911ee1f1af1398a24b1f9f992e0080",
"versionType": "git"
},
{
"lessThan": "d2be773a92874a070215b51b730cb2b1eaa8fae2",
"status": "affected",
"version": "f9010dbdce911ee1f1af1398a24b1f9f992e0080",
"versionType": "git"
},
{
"lessThan": "7ce635b3d3aba43296b62b5a2d97c008bc51cbd2",
"status": "affected",
"version": "f9010dbdce911ee1f1af1398a24b1f9f992e0080",
"versionType": "git"
},
{
"lessThan": "afe16653e05db07d658b55245c7a2e0603f136c0",
"status": "affected",
"version": "f9010dbdce911ee1f1af1398a24b1f9f992e0080",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"kernel/vhost_task.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"lessThan": "6.4",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.109",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.50",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost: Take a reference on the task in struct vhost_task.\n\nvhost_task_create() creates a task and keeps a reference to its\ntask_struct. That task may exit early via a signal and its task_struct\nwill be released.\nA pending vhost_task_wake() will then attempt to wake the task and\naccess a task_struct which is no longer there.\n\nAcquire a reference on the task_struct while creating the thread and\nrelease the reference while the struct vhost_task itself is removed.\nIf the task exits early due to a signal, then the vhost_task_wake() will\nstill access a valid task_struct. The wake is safe and will be skipped\nin this case."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nvhost: Tomar una referencia a la tarea en la estructura vhost_task.\n\nvhost_task_create() crea una tarea y mantiene una referencia a su task_struct. Esa tarea puede salir prematuramente a trav\u00e9s de una se\u00f1al y su task_struct ser\u00e1 liberada.\nUna vhost_task_wake() pendiente intentar\u00e1 entonces despertar la tarea y acceder a una task_struct que ya no existe.\n\nAdquirir una referencia a la task_struct mientras se crea el hilo y liberar la referencia mientras la propia estructura vhost_task es eliminada.\nSi la tarea sale prematuramente debido a una se\u00f1al, entonces la vhost_task_wake() seguir\u00e1 accediendo a una task_struct v\u00e1lida. El despertar es seguro y ser\u00e1 omitido en este caso."
}
],
"id": "CVE-2025-40024",
"lastModified": "2026-10-19T21:10:00.160",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2025-10-24T13:15:47.647",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7ce635b3d3aba43296b62b5a2d97c008bc51cbd2"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/82a1463c968b1a6ae598a4f2fcef17b71bb7d3a0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/afe16653e05db07d658b55245c7a2e0603f136c0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d2be773a92874a070215b51b730cb2b1eaa8fae2"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
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.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
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