CVE-2026-98055

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ASoC Intel AVS Bus Cleanup Flaw in Linux Kernel

Publication date: 2026-09-25

Last updated on: 2026-10-03

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: Intel: avs: Clean up the bus when fetching ML caps fails snd_hdac_ext_bus_get_ml_capabilities() may fail and its return code shall be checked and accounted for. Address the issue by updating the error-path for avs_pci_probe(). At the same time, if the function in question succeeds but the next part of avs_pci_probe() fails, the hlink list shall be cleaned up before leaving the scope.

CVSS Scores

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Meta Information

Published

2026-09-25

Last Modified

2026-10-03

Generated

2026-10-15

AI Q&A

2026-09-25

EPSS Evaluated

2026-10-14

NVD

CVE-2026-98055

EUVD

EUVD-2026-86708

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 improper cleanup when fetching machine learning capabilities in the ASoC Intel AVS driver. If the function snd_hdac_ext_bus_get_ml_capabilities() fails, its error code is not properly checked, potentially leaving system resources uncleaned. Additionally, if subsequent steps in avs_pci_probe() fail, the hlink list may not be cleaned up correctly.

Detection Guidance

This vulnerability is specific to the Linux kernel's ASoC Intel AVS component. Detection requires checking the kernel version and verifying if the affected function snd_hdac_ext_bus_get_ml_capabilities() is present and handling errors correctly. Use commands like uname -r to check kernel version and grep to inspect kernel logs or source code for the function.

Impact Analysis

This vulnerability could lead to resource leaks or system instability if the cleanup process fails. It may cause memory leaks or improper handling of hardware resources, potentially affecting system performance or causing crashes in affected Linux kernel versions.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or other common standards and regulations. The issue is specific to the Linux kernel's ASoC subsystem and relates to error handling in the avs_pci_probe() function. There is no indication that this vulnerability impacts data protection, privacy, or security controls required by these regulations.

Mitigation Strategies

Update the Linux kernel to a patched version where the issue is resolved. Monitor kernel logs for errors related to snd_hdac_ext_bus_get_ml_capabilities() and ensure proper cleanup of hlink lists during probe failures.

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