---
id: CVE-2022-2586
title: >-
  It was discovered that a nft object or expression could reference a nft set on
  a different nft table, leading to a use-after-free once that table was
  deleted.
summary: >-
  It was discovered that a nft object or expression could reference a nft set on
  a different nft table, leading to a use-after-free once that table was
  deleted.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H'
cwe:
  - CWE-416
  - CWE-416
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 3.16, < 4.14.316'
  - 'linux_kernel >= 4.15, < 4.19.256'
  - 'linux_kernel >= 4.20, < 5.4.211'
  - 'linux_kernel >= 5.5, < 5.10.137'
  - 'linux_kernel >= 5.11, < 5.15.61'
  - 'linux_kernel >= 5.16, < 5.18.18'
  - 'linux_kernel >= 5.19, < 5.19.2'
  - ubuntu_linux = 14.04
  - ubuntu_linux = 16.04
  - ubuntu_linux = 18.04
  - ubuntu_linux = 20.04
  - ubuntu_linux = 22.04
patched:
  - linux_kernel 5.19.2
published: '2024-01-08'
updated: '2026-08-13'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-2586'
references:
  - url: 'https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586'
    label: security@ubuntu.com
  - url: >-
      https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/#t
    label: security@ubuntu.com
  - url: 'https://ubuntu.com/security/notices/USN-5557-1'
    label: security@ubuntu.com
  - url: 'https://ubuntu.com/security/notices/USN-5560-1'
    label: security@ubuntu.com
  - url: 'https://ubuntu.com/security/notices/USN-5560-2'
    label: security@ubuntu.com
  - url: 'https://ubuntu.com/security/notices/USN-5562-1'
    label: security@ubuntu.com
  - url: 'https://ubuntu.com/security/notices/USN-5564-1'
    label: security@ubuntu.com
  - url: 'https://ubuntu.com/security/notices/USN-5565-1'
    label: security@ubuntu.com
  - url: 'https://ubuntu.com/security/notices/USN-5566-1'
    label: security@ubuntu.com
  - url: 'https://ubuntu.com/security/notices/USN-5567-1'
    label: security@ubuntu.com
  - url: 'https://ubuntu.com/security/notices/USN-5582-1'
    label: security@ubuntu.com
  - url: 'https://www.openwall.com/lists/oss-security/2022/08/09/5'
    label: security@ubuntu.com
  - url: 'https://www.zerodayinitiative.com/advisories/ZDI-22-1118/'
    label: security@ubuntu.com
  - url: 'https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/#t
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/notices/USN-5557-1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/notices/USN-5560-1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/notices/USN-5560-2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/notices/USN-5562-1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/notices/USN-5564-1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/notices/USN-5565-1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/notices/USN-5566-1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/notices/USN-5567-1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/notices/USN-5582-1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.openwall.com/lists/oss-security/2022/08/09/5'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.vicarius.io/vsociety/posts/use-after-free-vulnerability-linked-chain-between-nft-tables-cve-2022-2586
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.zerodayinitiative.com/advisories/ZDI-22-1118/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-2586
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
epss: 0.10458
epssPercentile: 0.95541
kev: true
kevDateAdded: '2024-06-26'
kevDueDate: '2024-07-17'
kevRansomware: false
exploited: true
zeroDay: true
ingestedAt: '2026-08-13T20:06:15.105Z'
exploits:
  github: 3
  githubRepos:
    - 'https://github.com/aels/CVE-2022-2586-LPE'
    - 'https://github.com/sniper404ghostxploit/CVE-2022-2586'
    - 'https://github.com/lanleft/CVE-2022-2586'
  checkedAt: '2026-09-24T07:52:50.678Z'
exploitAvailable: true
---

## Overview

It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

## Affected

- `linux_kernel >= 3.16, < 4.14.316`
- `linux_kernel >= 4.15, < 4.19.256`
- `linux_kernel >= 4.20, < 5.4.211`
- `linux_kernel >= 5.5, < 5.10.137`
- `linux_kernel >= 5.11, < 5.15.61`
- `linux_kernel >= 5.16, < 5.18.18`
- `linux_kernel >= 5.19, < 5.19.2`
- `ubuntu_linux = 14.04`
- `ubuntu_linux = 16.04`
- `ubuntu_linux = 18.04`
- `ubuntu_linux = 20.04`
- `ubuntu_linux = 22.04`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.19.2`