CVE-2025-38717
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: net: kcm: Fix race condition in kcm_unattach() syzbot found a race condition when kcm_unattach(psock) and kcm_release(kcm) are executed at the same time. kcm_unattach() is missing a check of the flag kcm->tx_stopped before calling queue_work(). If the kcm has a reserved psock, kcm_unattach() might get executed between cancel_work_sync() and unreserve_psock() in kcm_release(), requeuing kcm->tx_work right before kcm gets freed in kcm_done(). Remove kcm->tx_stopped and replace it by the less error-prone disable_work_sync().
Severity
MEDIUM
CVSS score
4.7
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-04 16:15:41.257000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
{
"id": "CVE-2025-38717",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-04T16:15:41.257",
"lastModified": "2026-10-19T21:10:00.160",
"vulnStatus": "Modified",
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: kcm: Fix race condition in kcm_unattach()\n\nsyzbot found a race condition when kcm_unattach(psock)\nand kcm_release(kcm) are executed at the same time.\n\nkcm_unattach() is missing a check of the flag\nkcm->tx_stopped before calling queue_work().\n\nIf the kcm has a reserved psock, kcm_unattach() might get executed\nbetween cancel_work_sync() and unreserve_psock() in kcm_release(),\nrequeuing kcm->tx_work right before kcm gets freed in kcm_done().\n\nRemove kcm->tx_stopped and replace it by the less\nerror-prone disable_work_sync()."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: kcm: Corrige condición de carrera en kcm_unattach()\n\nsyzbot encontró una condición de carrera cuando kcm_unattach(psock) y kcm_release(kcm) se ejecutan al mismo tiempo.\n\nA kcm_unattach() le falta una comprobación del flag kcm->tx_stopped antes de llamar a queue_work().\n\nSi el kcm tiene un psock reservado, kcm_unattach() podría ejecutarse entre cancel_work_sync() y unreserve_psock() en kcm_release(), volviendo a encolar kcm->tx_work justo antes de que kcm sea liberado en kcm_done().\n\nEliminar kcm->tx_stopped y reemplazarlo por el menos propenso a errores disable_work_sync()."
}
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"source": "[email protected]",
"type": "Primary",
"description": [
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