CVE-2025-38105
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Kill timer properly at removal The USB-audio MIDI code initializes the timer, but in a rare case, the driver might be freed without the disconnect call. This leaves the timer in an active state while the assigned object is released via snd_usbmidi_free(), which ends up with a kernel warning when the debug configuration is enabled, as spotted by fuzzer. For avoiding the problem, put timer_shutdown_sync() at snd_usbmidi_free(), so that the timer can be killed properly. While we're at it, replace the existing timer_delete_sync() at the disconnect callback with timer_shutdown_sync(), too.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-07-03 09:15:23.997000
Last modified
2026-11-05 21:18:10.047000
View original CVE JSON
{
"id": "CVE-2025-38105",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-07-03T09:15:23.997",
"lastModified": "2026-11-05T21:18:10.047",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Kill timer properly at removal\n\nThe USB-audio MIDI code initializes the timer, but in a rare case, the\ndriver might be freed without the disconnect call. This leaves the\ntimer in an active state while the assigned object is released via\nsnd_usbmidi_free(), which ends up with a kernel warning when the debug\nconfiguration is enabled, as spotted by fuzzer.\n\nFor avoiding the problem, put timer_shutdown_sync() at\nsnd_usbmidi_free(), so that the timer can be killed properly.\nWhile we're at it, replace the existing timer_delete_sync() at the\ndisconnect callback with timer_shutdown_sync(), too."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: usb-audio: Kill timer properly at removal El código MIDI USB-audio inicializa el temporizador, pero en un caso raro, el controlador podría liberarse sin la llamada de desconexión. Esto deja al temporizador en un estado activo mientras el objeto asignado se libera a través de snd_usbmidi_free(), lo que termina con una advertencia del kernel cuando se habilita la configuración de depuración, como lo detectó un fuzzer. Para evitar el problema, coloque timer_shutdown_sync() en snd_usbmidi_free(), para que el temporizador pueda ser eliminado correctamente. Mientras estamos en ello, reemplace también el timer_delete_sync() existente en la devolución de llamada de desconexión con timer_shutdown_sync()."
}
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"vendor": "Siemens",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
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"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
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"id": "CVE-2025-38105",
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"description": [
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