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.

Metrics

No CVSS v4.0

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10 cve-icon cve-icon
https://git.kernel.org/stable/c/02b94885b2fdf1808b1874e009bfb90753f8f4db cve-icon cve-icon
https://git.kernel.org/stable/c/368a01e5064c13946d032ab1d65ba95020a39cc5 cve-icon cve-icon
https://git.kernel.org/stable/c/872c9314769e89d8bda74ff3ac584756a45ee752 cve-icon cve-icon
https://git.kernel.org/stable/c/a80369c8ca50bc885d14386087a834659ec54a54 cve-icon cve-icon
https://git.kernel.org/stable/c/ad72c3c3f6eb81d2cb189ec71e888316adada5df cve-icon cve-icon
https://git.kernel.org/stable/c/c43991065f36f7628cd124e037b8750c4617a7a7 cve-icon cve-icon
https://git.kernel.org/stable/c/e7dc436aea80308a9268e6d2d85f910ff107de9b cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025050116-CVE-2022-49772-912e@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-49772 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-49772 cve-icon
History

Sat, 21 Jun 2025 15:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

 cvssV3_1

{'score': 2.1, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}

threat_severity

Low

Sat, 07 Jun 2025 03:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Fri, 02 May 2025 13:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Thu, 01 May 2025 14:30:00 +0000

Type Values Removed Values Added
Description 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.
Title ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-05-01T14:09:09.697Z

Updated: 2025-05-04T08:45:03.190Z

Reserved: 2025-04-16T07:17:33.805Z

Link: CVE-2022-49772

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-05-01T15:16:00.347

Modified: 2025-05-02T13:53:20.943

Link: CVE-2022-49772

cve-icon Redhat

Severity : Low

Publid Date: 2025-05-01T00:00:00Z

Links: CVE-2022-49772 - Bugzilla