---
id: CVE-2026-43317
title: 'most: core: fix leak on early registration failure'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  most: core: fix leak on early registration failure

  A recent commit fixed a resource leak on early registration failures but
  for some reason left out the first error pa…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <
    04474009a2ea7aa27c67d323952a23bb16d5acc5
  - >-
    Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <
    bbfe49ffb892bddf32c34bea95b7ff0fc30affb5
  - >-
    Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <
    f1ba620f9e8d7291f80c0554e4b820f5fb30e819
  - >-
    Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <
    5fd4396c2e48e90cc2597a86c18227d56ea845f0
  - >-
    Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c <
    2c198c272f9c9213b0fdf6b4a879f445c574f416
  - Linux 5.6
published: '2026-05-08'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:40:37.217Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43317'
references:
  - url: 'https://git.kernel.org/stable/c/04474009a2ea7aa27c67d323952a23bb16d5acc5'
  - url: 'https://git.kernel.org/stable/c/bbfe49ffb892bddf32c34bea95b7ff0fc30affb5'
  - url: 'https://git.kernel.org/stable/c/f1ba620f9e8d7291f80c0554e4b820f5fb30e819'
  - url: 'https://git.kernel.org/stable/c/5fd4396c2e48e90cc2597a86c18227d56ea845f0'
  - url: 'https://git.kernel.org/stable/c/2c198c272f9c9213b0fdf6b4a879f445c574f416'
tags:
  - cve.org
epss: 0.00162
epssPercentile: 0.04964
ingestedAt: '2026-10-21T12:48:53.640Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

most: core: fix leak on early registration failure

A recent commit fixed a resource leak on early registration failures but
for some reason left out the first error path which still leaks the
resources associated with the interface.

Fix up also the first error path so that the interface is always
released on errors.

## Affected

- `Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c < 04474009a2ea7aa27c67d323952a23bb16d5acc5`
- `Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c < bbfe49ffb892bddf32c34bea95b7ff0fc30affb5`
- `Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c < f1ba620f9e8d7291f80c0554e4b820f5fb30e819`
- `Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c < 5fd4396c2e48e90cc2597a86c18227d56ea845f0`
- `Linux >= 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c < 2c198c272f9c9213b0fdf6b4a879f445c574f416`
- `Linux 5.6`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.