---
id: CVE-2022-50311
title: 'cxl: Fix refcount leak in cxl_calc_capp_routing'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  cxl: Fix refcount leak in cxl_calc_capp_routing

  of_get_next_parent() returns a node pointer with refcount incremented,
  we should use of_node_put() on it when not need …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= f24be42aab37c6d07c05126673138e06223a6399 <
    c9bebc503881c1391f6c4f820134884adecf1519
  - >-
    Linux >= f24be42aab37c6d07c05126673138e06223a6399 <
    ee870f72465015327ad96204b0e92450d04870cd
  - >-
    Linux >= f24be42aab37c6d07c05126673138e06223a6399 <
    f2d60f6ba173cded65081cee690b67802395a479
  - >-
    Linux >= f24be42aab37c6d07c05126673138e06223a6399 <
    81c8bbf5b2b5f0c8030fff1716c00849cda8571a
  - >-
    Linux >= f24be42aab37c6d07c05126673138e06223a6399 <
    6a310e8db5409676b4b3e6c1f54dff174e4fd04d
  - >-
    Linux >= f24be42aab37c6d07c05126673138e06223a6399 <
    651e8bc9d0418c20a1989b7c078c64c2a6346fa3
  - >-
    Linux >= f24be42aab37c6d07c05126673138e06223a6399 <
    2d7b6580384e6d65419933ddc525bd176095da54
  - >-
    Linux >= f24be42aab37c6d07c05126673138e06223a6399 <
    1d09697ff22908ae487fc8c4fbde1811732be523
  - Linux 4.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:09:29.663410Z'
published: '2025-09-15'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:10:34.210Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2022-50311'
references:
  - url: 'https://git.kernel.org/stable/c/c9bebc503881c1391f6c4f820134884adecf1519'
  - url: 'https://git.kernel.org/stable/c/ee870f72465015327ad96204b0e92450d04870cd'
  - url: 'https://git.kernel.org/stable/c/f2d60f6ba173cded65081cee690b67802395a479'
  - url: 'https://git.kernel.org/stable/c/81c8bbf5b2b5f0c8030fff1716c00849cda8571a'
  - url: 'https://git.kernel.org/stable/c/6a310e8db5409676b4b3e6c1f54dff174e4fd04d'
  - url: 'https://git.kernel.org/stable/c/651e8bc9d0418c20a1989b7c078c64c2a6346fa3'
  - url: 'https://git.kernel.org/stable/c/2d7b6580384e6d65419933ddc525bd176095da54'
  - url: 'https://git.kernel.org/stable/c/1d09697ff22908ae487fc8c4fbde1811732be523'
tags:
  - cve.org
epss: 0.0016
epssPercentile: 0.05166
ingestedAt: '2026-11-05T22:38:31.724Z'
---

## Overview

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

cxl: Fix refcount leak in cxl_calc_capp_routing

of_get_next_parent() returns a node pointer with refcount incremented,
we should use of_node_put() on it when not need anymore.
This function only calls of_node_put() in normal path,
missing it in the error path.
Add missing of_node_put() to avoid refcount leak.

## Affected

- `Linux >= f24be42aab37c6d07c05126673138e06223a6399 < c9bebc503881c1391f6c4f820134884adecf1519`
- `Linux >= f24be42aab37c6d07c05126673138e06223a6399 < ee870f72465015327ad96204b0e92450d04870cd`
- `Linux >= f24be42aab37c6d07c05126673138e06223a6399 < f2d60f6ba173cded65081cee690b67802395a479`
- `Linux >= f24be42aab37c6d07c05126673138e06223a6399 < 81c8bbf5b2b5f0c8030fff1716c00849cda8571a`
- `Linux >= f24be42aab37c6d07c05126673138e06223a6399 < 6a310e8db5409676b4b3e6c1f54dff174e4fd04d`
- `Linux >= f24be42aab37c6d07c05126673138e06223a6399 < 651e8bc9d0418c20a1989b7c078c64c2a6346fa3`
- `Linux >= f24be42aab37c6d07c05126673138e06223a6399 < 2d7b6580384e6d65419933ddc525bd176095da54`
- `Linux >= f24be42aab37c6d07c05126673138e06223a6399 < 1d09697ff22908ae487fc8c4fbde1811732be523`
- `Linux 4.12`

## Remediation

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