CVE-2025-38105 (GCVE-0-2025-38105)

Vulnerability from cvelistv5 – Published: 2025-07-03 08:35 – Updated: 2025-10-12 11:12
VLAI?
Title
ALSA: usb-audio: Kill timer properly at removal
Summary
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c88469704d63787e8d44ca5ea1c1bd0adc29572d , < 647410a7da46067953a53c0d03f8680eff570959 (git)
Affected: c88469704d63787e8d44ca5ea1c1bd0adc29572d , < c611b9e55174e439dcd85a72969b43a95f3827a4 (git)
Affected: c88469704d63787e8d44ca5ea1c1bd0adc29572d , < 62066758d2ae169278e5d6aea5995b1b6f6ddeb5 (git)
Affected: c88469704d63787e8d44ca5ea1c1bd0adc29572d , < 0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1 (git)
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    Linux Linux Affected: 2.6.14
Unaffected: 0 , < 2.6.14 (semver)
Unaffected: 6.6.111 , ≤ 6.6.* (semver)
Unaffected: 6.12.52 , ≤ 6.12.* (semver)
Unaffected: 6.15.3 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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          "programFiles": [
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      "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\u0027re at it, replace the existing timer_delete_sync() at the\ndisconnect callback with timer_shutdown_sync(), too."
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        "dateUpdated": "2025-10-12T11:12:51.099Z",
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        "shortName": "Linux"
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    "datePublished": "2025-07-03T08:35:15.301Z",
    "dateReserved": "2025-04-16T04:51:23.985Z",
    "dateUpdated": "2025-10-12T11:12:51.099Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1"
}


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