---
id: CVE-2026-74603
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ptp: ocp: Fix board ID over-read

  The EEPROM board ID is a fixed 13-byte field and is not guaranteed to
  contain a NUL terminator
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ptp: ocp: Fix board ID over-read

  The EEPROM board ID is a fixed 13-byte field and is not guaranteed to
  contain a NUL terminator. Passing it directly to
  devlink_info_ve…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'
published: '2026-08-22'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74603'
references:
  - url: 'https://git.kernel.org/stable/c/3d965811be78473654e6e8cc8e4fb7b6b87aa6c1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5fd91dd4a143479b0575fb1f202ec1c501e71fd5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6b69f2ef10cdb018c0b127a7cab88e590bbddba4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/72ef3ce80078199bfad32f98d055f44ba7cd0c3d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f8d7e5751267637190eff887c971d5b468106213'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f92558bbe78d6284fedd053900f82a70f0aa8707'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00126
epssPercentile: 0.02025
ingestedAt: '2026-10-14T13:30:58.512Z'
---

## Overview

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

ptp: ocp: Fix board ID over-read

The EEPROM board ID is a fixed 13-byte field and is not guaranteed to
contain a NUL terminator. Passing it directly to
devlink_info_version_fixed_put() treats it as a C string and may read
beyond the field.

Format at most OCP_BOARD_ID_LEN bytes into the existing local buffer
before reporting the ID. Use a precision limit because the snprintf()
output size alone does not bound the source string scan.

## Remediation

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