ALSA: pcm: Test for "silence" field in struct "pcm_format_data"

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1002155: ALSA: pcm: Test for "silence" field in struct "pcm_format_data". Affects Kernel versions < 377a80ca6590f40ec8a85227b889a5d399fe26c3. No fix is published. How to fix ↓

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Background

The ALSA (Advanced Linux Sound Architecture) is a software framework and part of the Linux kernel that provides an API for sound card device drivers. It enables audio and MIDI functionality on Linux-based systems. The vulnerability affects the PCM (Pulse Code Modulation) component of ALSA, which is responsible for digital audio data processing and playback. The PCM format data structure contains a field called "silence" that is used to represent silence in audio streams.

Vulnerability Detail

The vulnerability in ALSA's PCM component lies in the lack of proper testing for the "silence" field in the "pcm_format_data" structure. This oversight could potentially lead to security vulnerabilities, although the actual impact and attack plausibility have not been proven yet. The vulnerability has been addressed in the Linux Kernel version v5.4.190 by commit 377a80ca6590f40ec8a85227b889a5d399fe26c3.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No specific workaround has been mentioned for this vulnerability.

Conclusion

The vulnerability in ALSA's PCM component, which involves the lack of proper testing for the "silence" field in the "pcm_format_data" structure, has been addressed in the Linux Kernel version v5.4.190. It is recommended to update the kernel to the latest version to mitigate the potential security risks. For further support on vulnerability remediation, please contact DevNack.com.

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