---
id: CVE-2026-23164
title: 'rocker: fix memory leak in rocker_world_port_post_fini()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  rocker: fix memory leak in rocker_world_port_post_fini()

  In rocker_world_port_pre_init(), rocker_port->wpriv is allocated with
  kzalloc(wops->port_priv_size, GFP_KERNEL…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c <
    2a3a64d75d2d0727da285749476761ebcad557a3
  - >-
    Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c <
    b11e6f926480ab0939fec44781f28558c54be4e7
  - >-
    Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c <
    8ce2e85889939c02740b4245301aa5c35fc94887
  - >-
    Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c <
    d448bf96889f1905e740c554780f5c9fa0440566
  - >-
    Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c <
    d8723917efda3b4f4c3de78d1ec1e1af015c0be1
  - >-
    Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c <
    dce375f4afc348c310d171abcde7ec1499a4c26a
  - >-
    Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c <
    8d7ba71e46216b8657a82ca2ec118bc93812a4d0
  - Linux 4.6
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:41:35.705081Z'
published: '2026-02-14'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:25:33.850Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23164'
references:
  - url: 'https://git.kernel.org/stable/c/2a3a64d75d2d0727da285749476761ebcad557a3'
  - url: 'https://git.kernel.org/stable/c/b11e6f926480ab0939fec44781f28558c54be4e7'
  - url: 'https://git.kernel.org/stable/c/8ce2e85889939c02740b4245301aa5c35fc94887'
  - url: 'https://git.kernel.org/stable/c/d448bf96889f1905e740c554780f5c9fa0440566'
  - url: 'https://git.kernel.org/stable/c/d8723917efda3b4f4c3de78d1ec1e1af015c0be1'
  - url: 'https://git.kernel.org/stable/c/dce375f4afc348c310d171abcde7ec1499a4c26a'
  - url: 'https://git.kernel.org/stable/c/8d7ba71e46216b8657a82ca2ec118bc93812a4d0'
tags:
  - cve.org
epss: 0.00134
epssPercentile: 0.02603
ingestedAt: '2026-10-19T18:35:50.098Z'
---

## Overview

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

rocker: fix memory leak in rocker_world_port_post_fini()

In rocker_world_port_pre_init(), rocker_port->wpriv is allocated with
kzalloc(wops->port_priv_size, GFP_KERNEL). However, in
rocker_world_port_post_fini(), the memory is only freed when
wops->port_post_fini callback is set:

    if (!wops->port_post_fini)
        return;
    wops->port_post_fini(rocker_port);
    kfree(rocker_port->wpriv);

Since rocker_ofdpa_ops does not implement port_post_fini callback
(it is NULL), the wpriv memory allocated for each port is never freed
when ports are removed. This leads to a memory leak of
sizeof(struct ofdpa_port) bytes per port on every device removal.

Fix this by always calling kfree(rocker_port->wpriv) regardless of
whether the port_post_fini callback exists.

## Affected

- `Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c < 2a3a64d75d2d0727da285749476761ebcad557a3`
- `Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c < b11e6f926480ab0939fec44781f28558c54be4e7`
- `Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c < 8ce2e85889939c02740b4245301aa5c35fc94887`
- `Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c < d448bf96889f1905e740c554780f5c9fa0440566`
- `Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c < d8723917efda3b4f4c3de78d1ec1e1af015c0be1`
- `Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c < dce375f4afc348c310d171abcde7ec1499a4c26a`
- `Linux >= e420114eef4a3a5025a243b89b0dc343101e3d3c < 8d7ba71e46216b8657a82ca2ec118bc93812a4d0`
- `Linux 4.6`

## Remediation

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