af_packet: Fix Data-Race in packet_setsockopt / packet_setsockopt

Kernel Updated 02 Oct 2025

Summary

18/02/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1000166: af_packet: fix data-race in packet_setsockopt / packet_setsockopt. Affects Kernel versions >= 47dceb8ecdc1c3ad1818dfea3d659a05b74c3fc2, < 4fc41403f0b6e4ac454f2ec27c05564fdbdf036b. No fix is published. How to fix ↓

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Background

The af_packet package is a part of the Linux Kernel ecosystem. It provides a socket interface for user-space applications to send and receive packets directly from the network stack. This vulnerability, identified as GSD-2022-1000166, affects the packet_setsockopt and packet_setsockopt functions within the af_packet package.

Vulnerability Detail

The vulnerability in packet_setsockopt / packet_setsockopt functions in the af_packet package allows for a data-race condition. This data-race can lead to potential security vulnerabilities, although the actual impact and attack plausibility have not yet been proven. The vulnerability was introduced in version v4.3 of the Linux Kernel by commit 47dceb8ecdc1c3ad1818dfea3d659a05b74c3fc2 and has been fixed in version v5.4.177 by commit 4fc41403f0b6e4ac454f2ec27c05564fdbdf036b.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No workaround has been provided for this vulnerability.

Conclusion

In conclusion, the af_packet package in the Linux Kernel is vulnerable to a data-race condition in the packet_setsockopt / packet_setsockopt functions. It is recommended to update the Linux Kernel to version v5.4.177 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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