CVE-2026-98297
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_core: Fix queuing tx_work after workqueue is drained
hci_send_acl(), hci_send_sco() and hci_send_iso() queue hdev->tx_work unconditionally. They can run from the L2CAP/SCO/ISO socket send path while hci_dev_close_sync() is draining hdev->workqueue (HCIDEVDOWN racing with a socket write). Since that queue_work() is not chained work from the tx_work worker itself, __queue_work() sees the queue marked __WQ_DRAINING, warns "cannot queue %ps on wq %s", and drops the work:
hci_dev_close_sync() already sets HCI_CMD_DRAIN_WORKQUEUE before draining, but only hci_cmd_work() and handle_cmd_cnt_and_timer() check it before queuing. Route the tx_work producers through the same guard via a shared hci_sched_tx() helper.
Detalles técnicos trazas, registros y código del informe original
WARNING: CPU: 1 PID: 5985 at kernel/workqueue.c:2352 __queue_work Call Trace: queue_work_on l2cap_chan_send l2cap_sock_sendmsg ...
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.18%
- Percentil entre todas las CVEs puntuadas: 6
- Fecha de la puntuación: 6/10/2026
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.
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-98297",
"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": "9cebe4680bb9a72f80c6541eb24af06db7a1fbc9",
"lessThan": "ab0678a0701ac4de499428dc1b321659bb74d272",
"versionType": "git"
},
{
"status": "affected",
"version": "47330cc875b36a1cf7b3543cb2cf90a7c603ce0e",
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"versionType": "git"
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{
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"version": "525daaea459fc215f432de1b8debbd9144bf97b0",
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"versionType": "git"
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{
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"version": "525daaea459fc215f432de1b8debbd9144bf97b0",
"lessThan": "6610c6fe4b8936c232048e6049bf77c70a6f759c",
"versionType": "git"
},
{
"status": "affected",
"version": "60bceb9a4c693e68cc90ba4b2dfb9e000e8638ff",
"versionType": "git"
},
{
"status": "affected",
"version": "6.12.93",
"lessThan": "6.12.112",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.18.35",
"lessThan": "6.18.54",
"versionType": "semver"
},
{
"status": "affected",
"version": "7.0.12",
"lessThan": "7.1",
"versionType": "semver"
}
],
"programFiles": [
"net/bluetooth/hci_core.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": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3-rc4",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/hci_core.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-10-06T09:18:20.400",
"references": [
{
"url": "https://git.kernel.org/stable/c/6610c6fe4b8936c232048e6049bf77c70a6f759c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ab0678a0701ac4de499428dc1b321659bb74d272",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
"url": "https://git.kernel.org/stable/c/cbb325bc150e8c0dbce004ac0e5516bcffc0de31",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/e220c1242a643d97102a79f09b7ef3aa31276961",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_core: Fix queuing tx_work after workqueue is drained\n\nhci_send_acl(), hci_send_sco() and hci_send_iso() queue hdev->tx_work\nunconditionally. They can run from the L2CAP/SCO/ISO socket send path\nwhile hci_dev_close_sync() is draining hdev->workqueue (HCIDEVDOWN\nracing with a socket write). Since that queue_work() is not chained\nwork from the tx_work worker itself, __queue_work() sees the queue\nmarked __WQ_DRAINING, warns \"cannot queue %ps on wq %s\", and drops\nthe work:\n\n WARNING: CPU: 1 PID: 5985 at kernel/workqueue.c:2352 __queue_work\n Call Trace:\n queue_work_on\n l2cap_chan_send\n l2cap_sock_sendmsg\n ...\n\nhci_dev_close_sync() already sets HCI_CMD_DRAIN_WORKQUEUE before\ndraining, but only hci_cmd_work() and handle_cmd_cnt_and_timer()\ncheck it before queuing. Route the tx_work producers through the\nsame guard via a shared hci_sched_tx() helper."
}
],
"lastModified": "2026-10-06T09:18:20.400",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}