---
id: CVE-2026-90056
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: fec: only stop PTP if it was initialized

  fec_ptp_init() is only called when fep->bufdesc_ex is available.
  However, fec_probe() unconditionally calls fec_ptp_stop(…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: fec: only stop PTP if it was initialized

  fec_ptp_init() is only called when fep->bufdesc_ex is available.
  However, fec_probe() unconditionally calls fec_ptp_stop(…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 32cba57ba74be58589aeb4cb6496183e46a5e3e5 <
    0dc8b3a395c3a749ab62c078f2fd54a402ae7e2b
  - >-
    Linux >= 32cba57ba74be58589aeb4cb6496183e46a5e3e5 <
    1973f108c481fab9bdc7daa6c77442af4a7388ab
  - >-
    Linux >= 32cba57ba74be58589aeb4cb6496183e46a5e3e5 <
    0602a4c238d2b6ed6e2bf5fa8ef7fa0203883dac
  - >-
    Linux >= 32cba57ba74be58589aeb4cb6496183e46a5e3e5 <
    7566789664813c1778f0d4b7e0539fd863ea450c
  - >-
    Linux >= 32cba57ba74be58589aeb4cb6496183e46a5e3e5 <
    383f699a86fd04458dc47d10578c17e94f63d92f
  - >-
    Linux >= 32cba57ba74be58589aeb4cb6496183e46a5e3e5 <
    1f9639caeece703012bdb23975ebedf70f426269
  - >-
    Linux >= 32cba57ba74be58589aeb4cb6496183e46a5e3e5 <
    5975009651c4e5ec1492612962d0dd3dc86f6bda
  - >-
    Linux >= 32cba57ba74be58589aeb4cb6496183e46a5e3e5 <
    dd890ae29299636fb037276fc1b5238698d08b03
  - Linux 9561b28349a22c808c3ce25eaed4d132104bafb7
  - Linux >= 3.18.99 < 3.19
  - Linux 4.2
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:16:54.177'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90056'
references:
  - url: 'https://git.kernel.org/stable/c/0602a4c238d2b6ed6e2bf5fa8ef7fa0203883dac'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/0dc8b3a395c3a749ab62c078f2fd54a402ae7e2b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1973f108c481fab9bdc7daa6c77442af4a7388ab'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1f9639caeece703012bdb23975ebedf70f426269'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/383f699a86fd04458dc47d10578c17e94f63d92f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5975009651c4e5ec1492612962d0dd3dc86f6bda'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7566789664813c1778f0d4b7e0539fd863ea450c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/dd890ae29299636fb037276fc1b5238698d08b03'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.902Z'
epss: 0.00211
epssPercentile: 0.11591
---

## Overview

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

net: fec: only stop PTP if it was initialized

fec_ptp_init() is only called when fep->bufdesc_ex is available.
However, fec_probe() unconditionally calls fec_ptp_stop() on the
failed_init path, and fec_drv_remove() unconditionally calls
fec_ptp_stop() during device removal.

Check fep->bufdesc_ex before calling fec_ptp_stop() in both paths
to avoid stopping PTP when it was not initialized.

## Remediation

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