CVE-2026-23446
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
net: usb: aqc111: Do not perform PM inside suspend callback
syzbot reports "task hung in rpm_resume"
This is caused by aqc111_suspend calling the PM variant of its write_cmd routine.
The simplified call trace looks like this:
At this point we block another task which holds rtnl_lock and locks up the whole networking stack.
Fix this by replacing the write_cmd calls with their _nopm variants
Detalles técnicos trazas, registros y código del informe original
rpm_suspend()
usb_suspend_both() - here udev->dev.power.runtime_status == RPM_SUSPENDING
aqc111_suspend() - called for the usb device interface
aqc111_write32_cmd()
usb_autopm_get_interface()
pm_runtime_resume_and_get()
rpm_resume() - here we call rpm_resume() on our parent
rpm_resume() - Here we wait for a status change that will never happen.CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.13%
- Percentil entre todas las CVEs puntuadas: 2
- 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)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/069c8f5aebe4d5224cf62acc7d4b3486091c658a
- https://git.kernel.org/stable/c/3267bcb744ee8a2feabaa7ab69473f086f67fd71
- https://git.kernel.org/stable/c/4de6a43e8ecf961feabddf0e9d6911081d2ed218
- https://git.kernel.org/stable/c/621f2f43741b51f62d767eb4752fbcefe2526926
- https://git.kernel.org/stable/c/98e8aed64614b0c199d5f0391fbe1a4331cb5773
- https://git.kernel.org/stable/c/b87f361d41f9a7f1f6c426947ca815651c481376
- https://git.kernel.org/stable/c/cc06ac99fd78839b2d38850785731ef131d9ae26
- https://git.kernel.org/stable/c/d3e32a612c6391ca9b7c183aeec22b4fd24c300c
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: aqc111: Do not perform PM inside suspend callback\n\nsyzbot reports \"task hung in rpm_resume\"\n\nThis is caused by aqc111_suspend calling\nthe PM variant of its write_cmd routine.\n\nThe simplified call trace looks like this:\n\nrpm_suspend()\n usb_suspend_both() - here udev->dev.power.runtime_status == RPM_SUSPENDING\n aqc111_suspend() - called for the usb device interface\n aqc111_write32_cmd()\n usb_autopm_get_interface()\n pm_runtime_resume_and_get()\n rpm_resume() - here we call rpm_resume() on our parent\n rpm_resume() - Here we wait for a status change that will never happen.\n\nAt this point we block another task which holds\nrtnl_lock and locks up the whole networking stack.\n\nFix this by replacing the write_cmd calls with their _nopm variants"
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"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: usb: aqc111: No realizar PM dentro de la función de devolución de llamada de suspensión\n\nsyzbot informa 'tarea colgada en rpm_resume'\n\nEsto es causado por aqc111_suspend llamando a la variante PM de su rutina write_cmd.\n\nEl rastro de llamada simplificado se ve así:\n\nrpm_suspend()\n usb_suspend_both() - aquí udev -> dev.power.runtime_status == RPM_SUSPENDING\n aqc111_suspend() - llamado para la interfaz del dispositivo usb\n aqc111_write32_cmd()\n usb_autopm_get_interface()\n pm_runtime_resume_and_get()\n rpm_resume() - aquí llamamos a rpm_resume() en nuestro padre\n rpm_resume() - Aquí esperamos un cambio de estado que nunca ocurrirá.\n\nEn este punto bloqueamos otra tarea que mantiene rtnl_lock y bloquea todo el stack de red.\n\nSolucione esto reemplazando las llamadas a write_cmd con sus variantes _nopm"
}
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"lastModified": "2026-07-24T21:10:00.143",
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