---
id: CVE-2026-89878
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: s2255: check firmware size before reading trailing marker

  s2255_probe() reads a 4-byte marker and version from the last 8 bytes
  of the firmware blob (fw->data[f…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: s2255: check firmware size before reading trailing marker

  s2255_probe() reads a 4-byte marker and version from the last 8 bytes
  of the firmware blob (fw->data[f…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 14d962602c8bf86e63c9b9272be1f0360d0a448a <
    6f6a5b0b0a84c2de0e152f2841e57bc226db924f
  - >-
    Linux >= 14d962602c8bf86e63c9b9272be1f0360d0a448a <
    8eca0f85eeb0789be40e637bcf9a21c4265b6c6f
  - >-
    Linux >= 14d962602c8bf86e63c9b9272be1f0360d0a448a <
    ffc27411ea60b8a09f1fea3d664b65210fdeb454
  - >-
    Linux >= 14d962602c8bf86e63c9b9272be1f0360d0a448a <
    5626785b0e4665326e4d96736c106161da09b2f0
  - >-
    Linux >= 14d962602c8bf86e63c9b9272be1f0360d0a448a <
    3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d
  - >-
    Linux >= 14d962602c8bf86e63c9b9272be1f0360d0a448a <
    342632a4d8ba3fafc1556deee0b7a48dd7860336
  - >-
    Linux >= 14d962602c8bf86e63c9b9272be1f0360d0a448a <
    7d221859ba45d7228d0138c9a3e55bd3bb31e14e
  - >-
    Linux >= 14d962602c8bf86e63c9b9272be1f0360d0a448a <
    330f2936ab768c7215322a476f033143e8891d28
  - Linux 2.6.28
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T11:16:56.100'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89878'
references:
  - url: 'https://git.kernel.org/stable/c/330f2936ab768c7215322a476f033143e8891d28'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/342632a4d8ba3fafc1556deee0b7a48dd7860336'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5626785b0e4665326e4d96736c106161da09b2f0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6f6a5b0b0a84c2de0e152f2841e57bc226db924f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7d221859ba45d7228d0138c9a3e55bd3bb31e14e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8eca0f85eeb0789be40e637bcf9a21c4265b6c6f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ffc27411ea60b8a09f1fea3d664b65210fdeb454'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-16T10:53:53.985Z'
epss: 0.00211
epssPercentile: 0.10102
---

## Overview

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

media: s2255: check firmware size before reading trailing marker

s2255_probe() reads a 4-byte marker and version from the last 8 bytes
of the firmware blob (fw->data[fw_size - 8] and [fw_size - 4]). If the
firmware file is shorter than 8 bytes, fw_size - 8 underflows and the
access reads out of bounds. Validate the firmware size before indexing.

## Remediation

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