---
id: CVE-2026-89838
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  f2fs: limit recovery filename logging to stored length

  F2FS stores recovery filenames as a length plus a fixed-size i_name
  buffer
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  f2fs: limit recovery filename logging to stored length

  F2FS stores recovery filenames as a length plus a fixed-size i_name
  buffer.  The buffer is not NUL-terminated, b…
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'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= f356fe0cba0e3523e538987916bd2acedd4e6f41 <
    317d32e1a8deaf1c01c388badc667334c39e62ca
  - >-
    Linux >= f356fe0cba0e3523e538987916bd2acedd4e6f41 <
    01027b2fcb74dade59fb833b51023f6593b6a9a2
  - Linux 3.11
published: '2026-09-16'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T14:17:27.383'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89838'
references:
  - url: 'https://git.kernel.org/stable/c/01027b2fcb74dade59fb833b51023f6593b6a9a2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/317d32e1a8deaf1c01c388badc667334c39e62ca'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/35c5abccd0924b02ad34126f562d93c8d75b0831'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00164
epssPercentile: 0.04959
ingestedAt: '2026-09-16T10:53:53.997Z'
---

## Overview

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

f2fs: limit recovery filename logging to stored length

F2FS stores recovery filenames as a length plus a fixed-size i_name
buffer.  The buffer is not NUL-terminated, but recover_inode() and
recover_dentry() print it with %s.

For a 255-byte filename, recovery logging can read past i_name into the
following raw inode fields.

Print the name with a precision bounded by i_namelen and F2FS_NAME_LEN.

## Remediation

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