---
id: CVE-2026-23464
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  soc: microchip: mpfs: Fix memory leak in mpfs_sys_controller_probe()

  In mpfs_sys_controller_probe(), if of_get_mtd_device_by_node() fails,
  the function returns immedia…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  soc: microchip: mpfs: Fix memory leak in mpfs_sys_controller_probe()

  In mpfs_sys_controller_probe(), if of_get_mtd_device_by_node() fails,
  the function returns immedia…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-401
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.8, < 6.12.78'
  - 'linux_kernel >= 6.13, < 6.18.20'
  - 'linux_kernel >= 6.19, < 6.19.10'
  - linux_kernel = 7.0
patched:
  - linux_kernel 6.19.10
published: '2026-04-03'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-23464'
references:
  - url: 'https://git.kernel.org/stable/c/17c84fb7cf3971cc621646185d785670e9530ca1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5a741f8cc6fe62542f955cd8d24933a1b6589cbd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/da4b44c42f40501db35f5d0a6243708a061490a0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e3dd5cffba07de6574165a72851471cd42cc6d15'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00122
epssPercentile: 0.01723
ingestedAt: '2026-07-25T22:05:03.629Z'
---

## Overview

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

soc: microchip: mpfs: Fix memory leak in mpfs_sys_controller_probe()

In mpfs_sys_controller_probe(), if of_get_mtd_device_by_node() fails,
the function returns immediately without freeing the allocated memory
for sys_controller, leading to a memory leak.

Fix this by jumping to the out_free label to ensure the memory is
properly freed.

Also, consolidate the error handling for the mbox_request_channel()
failure case to use the same label.

## Affected

- `linux_kernel >= 6.8, < 6.12.78`
- `linux_kernel >= 6.13, < 6.18.20`
- `linux_kernel >= 6.19, < 6.19.10`
- `linux_kernel = 7.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.19.10`