---
id: CVE-2026-93816
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  f2fs: validate inline dentry name lengths before conversion

  Inline dentry conversion copies names out of the inline dentry area
  before checking that each recorded name…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  f2fs: validate inline dentry name lengths before conversion

  Inline dentry conversion copies names out of the inline dentry area
  before checking that each recorded name…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    2ce0bc5853bec7cdc724477a87ea579fde664243
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    7caa8a0ae94b132576c2e46e9b4fd4e0f356f373
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    cfcd0e49a178b3dac2c0ece656079081dbf5da74
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T13:17:22.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93816'
references:
  - url: 'https://git.kernel.org/stable/c/2ce0bc5853bec7cdc724477a87ea579fde664243'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7caa8a0ae94b132576c2e46e9b4fd4e0f356f373'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cfcd0e49a178b3dac2c0ece656079081dbf5da74'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T16:47:15.893Z'
---

## Overview

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

f2fs: validate inline dentry name lengths before conversion

Inline dentry conversion copies names out of the inline dentry area
before checking that each recorded name length fits in the available
filename slots.

A corrupted image can therefore make the conversion path read past
the inline filename storage while building the regular dentry block.

Validate each inline dentry name length against the inline filename
area before copying it.

## Remediation

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