ghsa-7f9v-c8qw-m5c4
Vulnerability from github
Published
2025-07-03 09:30
Modified
2025-10-12 12:30
Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38105"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-03T09:15:23Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-7f9v-c8qw-m5c4",
  "modified": "2025-10-12T12:30:21Z",
  "published": "2025-07-03T09:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38105"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/62066758d2ae169278e5d6aea5995b1b6f6ddeb5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/647410a7da46067953a53c0d03f8680eff570959"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c611b9e55174e439dcd85a72969b43a95f3827a4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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