CVE-2026-72445

Received Received - Intake

USB Audio Driver Substream Enable Failure in Linux Kernel

Publication date: 2026-08-15

Last updated on: 2026-08-17

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: qcom: clear opened when stream enable fails On enable, subs->opened is set before the service_interval is validated; an invalid interval jumps to the response label without clearing it, so the substream is wedged at -EBUSY until a disable or disconnect. Clear subs->opened on the enable error path.

CVSS Scores

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Meta Information

Published

2026-08-15

Last Modified

2026-08-17

Generated

2026-09-04

AI Q&A

2026-08-15

EPSS Evaluated

2026-09-03

NVD

CVE-2026-72445

EUVD

EUVD-2026-59344

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel involves a USB audio driver for Qualcomm devices. When enabling a stream, the system sets a flag indicating the substream is opened before validating the service interval. If the interval is invalid, the system jumps to an error response without clearing the flag. This leaves the substream stuck in a busy state, causing errors until the stream is manually disabled or disconnected.

Detection Guidance

This vulnerability is specific to the Linux kernel's ALSA USB audio driver for Qualcomm devices. Detection requires checking kernel logs for USB audio subsystem errors or examining the driver state. Commands like dmesg | grep -i usb-audio or lsmod | grep snd_usb_audio may help identify issues.

Impact Analysis

If you use a Qualcomm USB audio device on a Linux system with this kernel version, the vulnerability could cause audio streams to fail and become unresponsive. You may experience audio playback issues or require a system reboot to restore normal functionality.

Compliance Impact

This vulnerability does not directly affect compliance with standards like GDPR or HIPAA as it pertains to a Linux kernel audio subsystem issue. It is a local denial-of-service flaw in USB audio handling, not a data exposure or privacy breach.

Mitigation Strategies

Update the Linux kernel to a patched version that includes the fix for this vulnerability. Monitor kernel logs for USB audio errors and consider disabling the affected module if not in use.

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