BaseFortify

Publication date: 2025-12-30

Last updated on: 2025-12-31

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: net: dsa: tag_8021q: avoid leaking ctx on dsa_tag_8021q_register() error path If dsa_tag_8021q_setup() fails, for example due to the inability of the device to install a VLAN, the tag_8021q context of the switch will leak. Make sure it is freed on the error path.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-12-30

Last Modified

2025-12-31

Generated

2026-07-06

AI Q&A

2025-12-30

EPSS Evaluated

2026-07-05

NVD

CVE-2022-50837

EUVD

EUVD-2022-55861

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel involves the dsa_tag_8021q component. Specifically, if the function dsa_tag_8021q_setup() fails, such as when the device cannot install a VLAN, the tag_8021q context of the switch may leak because it is not properly freed on the error path. This means that resources associated with the tag_8021q context are not released correctly when an error occurs.

Impact Analysis

The impact of this vulnerability is a resource leak in the Linux kernel's network switch tagging mechanism. This could potentially lead to increased memory usage or resource exhaustion on the affected device, which might degrade system performance or stability over time.

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