---
id: CVE-2024-26763
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  dm-crypt: don't modify the data when using authenticated encryption

  It was said that authenticated encryption could produce invalid tag when
  the data that is being enc…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  dm-crypt: don't modify the data when using authenticated encryption

  It was said that authenticated encryption could produce invalid tag when
  the data that is being enc…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'
cwe:
  - CWE-787
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 4.19.308
  - 'linux_kernel >= 4.20, < 5.4.270'
  - 'linux_kernel >= 5.5, < 5.10.211'
  - 'linux_kernel >= 5.11, < 5.15.150'
  - 'linux_kernel >= 5.16, < 6.1.80'
  - 'linux_kernel >= 6.2, < 6.6.19'
  - 'linux_kernel >= 6.7, < 6.7.7'
  - linux_kernel = 6.8
  - debian_linux = 10.0
patched:
  - linux_kernel 6.7.7
published: '2024-04-03'
updated: '2026-08-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-26763'
references:
  - url: 'https://git.kernel.org/stable/c/0dccbb93538fe89a86c6de31d4b1c8c560848eaa'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1a4371db68a31076afbe56ecce34fbbe6c80c529'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3c652f6fa1e1f9f02c3fbf359d260ad153ec5f90'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/43a202bd552976497474ae144942e32cc5f34d7e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/50c70240097ce41fe6bce6478b80478281e4d0f7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/64ba01a365980755732972523600a961c4266b75'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d9e3763a505e50ba3bd22846f2a8db99429fb857'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e08c2a8d27e989f0f5b0888792643027d7e691e6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/0dccbb93538fe89a86c6de31d4b1c8c560848eaa'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/1a4371db68a31076afbe56ecce34fbbe6c80c529'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/3c652f6fa1e1f9f02c3fbf359d260ad153ec5f90'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/43a202bd552976497474ae144942e32cc5f34d7e'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/50c70240097ce41fe6bce6478b80478281e4d0f7'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/64ba01a365980755732972523600a961c4266b75'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/d9e3763a505e50ba3bd22846f2a8db99429fb857'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/e08c2a8d27e989f0f5b0888792643027d7e691e6'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00282
epssPercentile: 0.18504
ingestedAt: '2026-08-05T10:46:48.544Z'
---

## Overview

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

dm-crypt: don't modify the data when using authenticated encryption

It was said that authenticated encryption could produce invalid tag when
the data that is being encrypted is modified [1]. So, fix this problem by
copying the data into the clone bio first and then encrypt them inside the
clone bio.

This may reduce performance, but it is needed to prevent the user from
corrupting the device by writing data with O_DIRECT and modifying them at
the same time.

[1] https://lore.kernel.org/all/20240207004723.GA35324@sol.localdomain/T/

## Affected

- `linux_kernel < 4.19.308`
- `linux_kernel >= 4.20, < 5.4.270`
- `linux_kernel >= 5.5, < 5.10.211`
- `linux_kernel >= 5.11, < 5.15.150`
- `linux_kernel >= 5.16, < 6.1.80`
- `linux_kernel >= 6.2, < 6.6.19`
- `linux_kernel >= 6.7, < 6.7.7`
- `linux_kernel = 6.8`
- `debian_linux = 10.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.7.7`