---
id: CVE-2024-40971
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  f2fs: remove clear SB_INLINECRYPT flag in default_options

  In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set.
  If create new file or open file during this ga…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  f2fs: remove clear SB_INLINECRYPT flag in default_options

  In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set.
  If create new file or open file during this ga…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 3.8, < 5.10.221'
  - 'linux_kernel >= 5.11, < 5.15.162'
  - 'linux_kernel >= 5.16, < 6.1.96'
  - 'linux_kernel >= 6.2, < 6.6.36'
  - 'linux_kernel >= 6.7, < 6.9.7'
patched:
  - linux_kernel 6.9.7
published: '2024-07-12'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:18:39.327'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-40971'
references:
  - url: 'https://git.kernel.org/stable/c/38a82c8d00638bb642bef787eb1d5e0e4d3b7d71'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/724429db09e21ee153fef35e34342279d33df6ae'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a9cea0489c562c97cd56bb345e78939f9909e7f4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ac5eecf481c29942eb9a862e758c0c8b68090c33'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ae39c8ec4250d2a35ddaab1c40faacfec306ff66'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eddeb8d941d5be11a9da5637dbe81ac37e8449a2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/38a82c8d00638bb642bef787eb1d5e0e4d3b7d71'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/724429db09e21ee153fef35e34342279d33df6ae'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/a9cea0489c562c97cd56bb345e78939f9909e7f4'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/ac5eecf481c29942eb9a862e758c0c8b68090c33'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/ae39c8ec4250d2a35ddaab1c40faacfec306ff66'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/eddeb8d941d5be11a9da5637dbe81ac37e8449a2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-355557.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00307
epssPercentile: 0.23315
ingestedAt: '2026-10-15T03:30:12.723Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T17:02:54.463850Z'
---

## Overview

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

f2fs: remove clear SB_INLINECRYPT flag in default_options

In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set.
If create new file or open file during this gap, these files
will not use inlinecrypt. Worse case, it may lead to data
corruption if wrappedkey_v0 is enable.

Thread A:                               Thread B:

-f2fs_remount				-f2fs_file_open or f2fs_new_inode
  -default_options
	<- clear SB_INLINECRYPT flag

                                          -fscrypt_select_encryption_impl

  -parse_options
	<- set SB_INLINECRYPT again

## Affected

- `linux_kernel >= 3.8, < 5.10.221`
- `linux_kernel >= 5.11, < 5.15.162`
- `linux_kernel >= 5.16, < 6.1.96`
- `linux_kernel >= 6.2, < 6.6.36`
- `linux_kernel >= 6.7, < 6.9.7`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.9.7`