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CVE-2022-49772

5.5 · MEDIUM

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 s…

Published May 1, 2025EPSS 0.20%

Overview

CVE-2022-49772 is a medium-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10Refgit.kernel.org/stable/c/02b94885b2fdf1808b1874e009bfb90753f8f4dbRefgit.kernel.org/stable/c/a80369c8ca50bc885d14386087a834659ec54a54Refgit.kernel.org/stable/c/ad72c3c3f6eb81d2cb189ec71e888316adada5dfRefgit.kernel.org/stable/c/c43991065f36f7628cd124e037b8750c4617a7a7Refgit.kernel.org/stable/c/e7dc436aea80308a9268e6d2d85f910ff107de9b

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49772?

CVE-2022-49772 is a medium-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49772?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49772?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49772?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49772 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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