---
id: CVE-2024-49968
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ext4: filesystems without casefold feature cannot be mounted with siphash

  When mounting the ext4 filesystem, if the default hash version is set to
  DX_HASH_SIPHASH but …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ext4: filesystems without casefold feature cannot be mounted with siphash

  When mounting the ext4 filesystem, if the default hash version is set to
  DX_HASH_SIPHASH but …
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 6.11.3
patched:
  - linux_kernel 6.11.3
published: '2024-10-21'
updated: '2026-07-14'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-49968'
references:
  - url: 'https://git.kernel.org/stable/c/11bd1c279bac701ba91119875796ffff3b98250e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/52c4538a92da6f3242d4140c03ddc5ee71b39ba8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/86b81d4eab1cd4c56f7447896232cf33472c2395'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/985b67cd86392310d9e9326de941c22fc9340eec'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e1373903db6c4ac994de0d18076280ad88e12dee'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-019113.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-49968.json
  - url: 'https://access.redhat.com/security/cve/CVE-2024-49968'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2320475'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2024-49968'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-49968'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2024102133-CVE-2024-49968-ce10@gregkh/T
  - url: 'https://access.redhat.com/errata/RHSA-2025:6966'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00245
epssPercentile: 0.14044
ingestedAt: '2026-07-14T13:36:54.577Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-10-22T13:34:11.259486Z'
cwe:
  - CWE-20
---

## Overview

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

ext4: filesystems without casefold feature cannot be mounted with siphash

When mounting the ext4 filesystem, if the default hash version is set to
DX_HASH_SIPHASH but the casefold feature is not set, exit the mounting.

## Affected

- `linux_kernel < 6.11.3`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.11.3`

## Vendor advisories

- **RHSA-2025:6966** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9), Red Hat Enterprise Linux Real Time (v. 9) · released 2025-05-13 · [advisory](https://access.redhat.com/errata/RHSA-2025:6966)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9 · updated 2026-09-13 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-49968.json)