---
id: CVE-2026-74693
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: prestera: validate firmware header length

  prestera_fw_hdr_parse() reads the firmware header before checking
  that the firmware image contains that header.

  Reject …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: prestera: validate firmware header length

  prestera_fw_hdr_parse() reads the firmware header before checking
  that the firmware image contains that header.

  Reject …
severity: none
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-2026-74693'
references:
  - url: 'https://git.kernel.org/stable/c/0fbcceb9d19f2d1dcdf099aee590f2517cb718bb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/363e048a9d0a6c245cbc348c8a220170afed046a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/470ac9cce7308e60cf2dceb448749cdd006e73de'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6fad06bb793d7089ae05b9fcf46e11be2dfe4850'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7fa8a12296d8d5aa4b1c3904f0b354d81124cf29'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8ae344eb540af3f457179b52bc6061416752485c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e0f382e8084117f0b11ffb070fe1079e38c0d7f9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.0022
epssPercentile: 0.11527
ingestedAt: '2026-10-14T13:30:58.539Z'
---

## Overview

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

net: prestera: validate firmware header length

prestera_fw_hdr_parse() reads the firmware header before checking
that the firmware image contains that header.

Reject images shorter than struct prestera_fw_header before decoding the
magic and version fields.

## Remediation

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