ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction

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-2022-1002361: ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction. Affects Kernel versions >= 00a7bb81c20f3e81711e28e0f6c08cee8fd18514, < 60e5d391805d70458a01998de00d0c28cba40bf3. No fix is published. How to fix ↓

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Background

The ALSA firewire-lib is a component of the Linux Kernel that provides support for FireWire audio devices. It allows users to connect and use FireWire audio devices with their Linux systems. The firewire-lib module handles communication between the kernel and FireWire audio devices, enabling audio data transfer and control operations.

Vulnerability Detail

The ALSA firewire-lib module has a vulnerability related to an uninitialized flag for AV/C (Audio/Video Control) deferred transactions. This vulnerability was introduced in version v3.16 of the Linux Kernel and was fixed in version v4.19.238. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause a denial of service by sending specially crafted AV/C deferred transactions to a vulnerable system. The uninitialized flag could lead to incorrect handling of these transactions, resulting in unexpected behavior or memory corruption.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.19.238 or later. This fix addresses the uninitialized flag issue in the firewire-lib module. Users can obtain the updated kernel from the official Linux Kernel repository or through their Linux distribution's package management system.

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Workaround

There is no specific workaround available for this vulnerability. Updating the Linux Kernel to the fixed version is the recommended solution.

Conclusion

The ALSA firewire-lib vulnerability related to the uninitialized flag for AV/C deferred transactions can be mitigated by updating the Linux Kernel to version v4.19.238 or later. This fix addresses the issue and prevents potential exploitation. For further support on vulnerability remediation, please contact DevNack.com.

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