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CVE-2022-49772 (GCVE-0-2022-49772)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-05-11 19:06
VLAI
Title
ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open() snd_usbmidi_output_open() has a check of the NULL port with snd_BUG_ON(). snd_BUG_ON() was used as this shouldn't have happened, but in reality, the NULL port may be seen when the device gives an invalid endpoint setup at the descriptor, hence the driver skips the allocation. That is, the check itself is valid and snd_BUG_ON() should be dropped from there. Otherwise it's confusing as if it were a real bug, as recently syzbot stumbled on it.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 738d9edcfd44f154924692e54109fb439fcf8bdd , < c43991065f36f7628cd124e037b8750c4617a7a7 (git)
Affected: 738d9edcfd44f154924692e54109fb439fcf8bdd , < e7dc436aea80308a9268e6d2d85f910ff107de9b (git)
Affected: 738d9edcfd44f154924692e54109fb439fcf8bdd , < a80369c8ca50bc885d14386087a834659ec54a54 (git)
Affected: 738d9edcfd44f154924692e54109fb439fcf8bdd , < 02b94885b2fdf1808b1874e009bfb90753f8f4db (git)
Affected: 738d9edcfd44f154924692e54109fb439fcf8bdd , < 00f5f1bbf815a39e9eecb468d12ca55d3360eb10 (git)
Affected: 738d9edcfd44f154924692e54109fb439fcf8bdd , < ad72c3c3f6eb81d2cb189ec71e888316adada5df (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 4.19.267 , ≤ 4.19.* (semver)
Unaffected: 5.4.225 , ≤ 5.4.* (semver)
Unaffected: 5.10.156 , ≤ 5.10.* (semver)
Unaffected: 5.15.80 , ≤ 5.15.* (semver)
Unaffected: 6.0.10 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:38:25+00:00",
      "cve": "CVE-2022-49772",
      "id": "CVE-2022-49772",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49772.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T02:02:54Z",
      "cve": "CVE-2022-49772",
      "id": "CVE-2022-49772",
      "initial_release_date": "2025-05-03T02:53:30Z",
      "product_status:known_affected": "496",
      "product_status:known_not_affected": "151",
      "product_status:recommended": "318",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49772",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49772.json",
      "version": "54"
    }
  }
}



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