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CVE-2025-38249

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3() In snd_usb_get_audioformat_uac3(), the length value r…

Published Jul 9, 2025CWE-125EPSS 0.19%

Overview

CVE-2025-38249 is a high-severity vulnerability. It was published on July 9, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. 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: Fix out-of-bounds read in snd_usb_get_audioformat_uac3()

In snd_usb_get_audioformat_uac3(), the length value returned from

snd_usb_ctl_msg() is used directly for memory allocation without

validation. This length is controlled by the USB device.

The allocated buffer is cast to a uac3_cluster_header_descriptor

and its fields are accessed without verifying that the buffer

is large enough. If the device returns a smaller than expected

length, this leads to an out-of-bounds read.

Add a length check to ensure the buffer is large enough for

uac3_cluster_header_descriptor.

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/0ee87c2814deb5e42921281116ac3abcb326880bRefgit.kernel.org/stable/c/11e740dc1a2c8590eb7074b5c4ab921bb6224c36Refgit.kernel.org/stable/c/24ff7d465c4284529bbfa207757bffb6f44b6403Refgit.kernel.org/stable/c/2dc1c3edf67abd30c757f8054a5da61927cdda21Refgit.kernel.org/stable/c/6eb211788e1370af52a245d4d7da35c374c7b401Refgit.kernel.org/stable/c/74fcb3852a2f579151ce80b9ed96cd916ba0d5d8Refgit.kernel.org/stable/c/c3fb926abe90d86f5e3055e0035f04d9892a118bRefgit.kernel.org/stable/c/fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8aReflists.debian.org/debian-lts-announce/2025/10/msg00007.htmlReflists.debian.org/debian-lts-announce/2025/10/msg00008.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38249?

CVE-2025-38249 is a high-severity vulnerability. It was published on July 9, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-38249?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-38249?

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-2025-38249?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38249 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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