---
id: CVE-2026-43078
title: 'crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl

  When page reassignment was added to af_alg_pull_tsgl the original
  loop wasn't updated so it may try…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <
    fa48d3ea9cdbfb28c1fd6756c6c5cd01351aa51e
  - >-
    Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <
    2b781d1d4f933990318bcc5c68fb75a717379e42
  - >-
    Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <
    f7826bc0b39928a4a22f6b815dd9940b22a63503
  - >-
    Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <
    710a4ce5d7afd9fe082c75dec282ab4a11c0fe71
  - >-
    Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <
    c8369a6d62f5abde9cbd4b62c45bf4b996be2468
  - >-
    Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <
    dea5fcf085f977b6c2de1b2d4ec4767b6c840d1f
  - >-
    Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <
    9532501e0f1b200ea80baa0e33e0b06da10bb271
  - >-
    Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <
    31d00156e50ecad37f2cb6cbf04aaa9a260505ef
  - Linux 4.14
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:14:24.515362Z'
published: '2026-05-06'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:20:31.752Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43078'
references:
  - url: 'https://git.kernel.org/stable/c/fa48d3ea9cdbfb28c1fd6756c6c5cd01351aa51e'
  - url: 'https://git.kernel.org/stable/c/2b781d1d4f933990318bcc5c68fb75a717379e42'
  - url: 'https://git.kernel.org/stable/c/f7826bc0b39928a4a22f6b815dd9940b22a63503'
  - url: 'https://git.kernel.org/stable/c/710a4ce5d7afd9fe082c75dec282ab4a11c0fe71'
  - url: 'https://git.kernel.org/stable/c/c8369a6d62f5abde9cbd4b62c45bf4b996be2468'
  - url: 'https://git.kernel.org/stable/c/dea5fcf085f977b6c2de1b2d4ec4767b6c840d1f'
  - url: 'https://git.kernel.org/stable/c/9532501e0f1b200ea80baa0e33e0b06da10bb271'
  - url: 'https://git.kernel.org/stable/c/31d00156e50ecad37f2cb6cbf04aaa9a260505ef'
tags:
  - cve.org
epss: 0.00176
epssPercentile: 0.06655
ingestedAt: '2026-10-16T17:24:46.681Z'
---

## Overview

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

crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl

When page reassignment was added to af_alg_pull_tsgl the original
loop wasn't updated so it may try to reassign one more page than
necessary.

Add the check to the reassignment so that this does not happen.

Also update the comment which still refers to the obsolete offset
argument.

## Affected

- `Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a < fa48d3ea9cdbfb28c1fd6756c6c5cd01351aa51e`
- `Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a < 2b781d1d4f933990318bcc5c68fb75a717379e42`
- `Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a < f7826bc0b39928a4a22f6b815dd9940b22a63503`
- `Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a < 710a4ce5d7afd9fe082c75dec282ab4a11c0fe71`
- `Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a < c8369a6d62f5abde9cbd4b62c45bf4b996be2468`
- `Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a < dea5fcf085f977b6c2de1b2d4ec4767b6c840d1f`
- `Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a < 9532501e0f1b200ea80baa0e33e0b06da10bb271`
- `Linux >= e870456d8e7c8d57c059ea479b5aadbb55ff4c3a < 31d00156e50ecad37f2cb6cbf04aaa9a260505ef`
- `Linux 4.14`

## Remediation

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