---
id: CVE-2025-71131
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  crypto: seqiv - Do not use req->iv after crypto_aead_encrypt

  As soon as crypto_aead_encrypt is called, the underlying request
  may be freed by an asynchronous completio…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  crypto: seqiv - Do not use req->iv after crypto_aead_encrypt

  As soon as crypto_aead_encrypt is called, the underlying request
  may be freed by an asynchronous completio…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 2.6.25.1, < 5.10.248'
  - 'linux_kernel >= 5.11, < 5.15.198'
  - 'linux_kernel >= 5.16, < 6.1.160'
  - 'linux_kernel >= 6.2, < 6.6.120'
  - 'linux_kernel >= 6.7, < 6.12.64'
  - 'linux_kernel >= 6.13, < 6.18.4'
  - linux_kernel = 2.6.25
  - linux_kernel = 6.19
patched:
  - linux_kernel 6.18.4
published: '2026-01-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:18:23.363'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-71131'
references:
  - url: 'https://git.kernel.org/stable/c/0279978adec6f1296af66b642cce641c6580be46'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/18202537856e0fae079fed2c9308780bcff2bb9d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/50f196d2bbaee4ab2494bb1b0d294deba292951a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/50fdb78b7c0bcc550910ef69c0984e751cac72fa'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5476f7f8a311236604b78fcc5b2a63b3a61b0169'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/baf0e2d1e03ddb04781dfe7f22a654d3611f69b2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ccbb96434d88e32358894c879457b33f7508e798'
    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://cert-portal.siemens.com/productcert/html/ssa-457936.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00305
epssPercentile: 0.23175
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:40:45.516602Z'
ingestedAt: '2026-09-08T15:33:26.994Z'
---

## Overview

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

crypto: seqiv - Do not use req->iv after crypto_aead_encrypt

As soon as crypto_aead_encrypt is called, the underlying request
may be freed by an asynchronous completion.  Thus dereferencing
req->iv after it returns is invalid.

Instead of checking req->iv against info, create a new variable
unaligned_info and use it for that purpose instead.

## Affected

- `linux_kernel >= 2.6.25.1, < 5.10.248`
- `linux_kernel >= 5.11, < 5.15.198`
- `linux_kernel >= 5.16, < 6.1.160`
- `linux_kernel >= 6.2, < 6.6.120`
- `linux_kernel >= 6.7, < 6.12.64`
- `linux_kernel >= 6.13, < 6.18.4`
- `linux_kernel = 2.6.25`
- `linux_kernel = 6.19`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.18.4`