CVE-2022-2586

Name: CVE-2022-2586
Creator: NVD / NIST
Published: 2024-01-08T18:15:44.62+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10Actively ExploitedEPSS 12.75%

Last modified Jun 17, 2026

CVE-2022-2586 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 12.75% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

12.75%

95.8th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jul 17, 2024.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	<= 5.19.17
Linux	Linux Kernel	6.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	20.04
Canonical	Ubuntu Linux	22.04

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586Third Party Advisory
https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/#tMailing List, Patch
https://ubuntu.com/security/notices/USN-5557-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-2Third Party Advisory
https://ubuntu.com/security/notices/USN-5562-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5564-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5565-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5566-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5567-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5582-1Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/08/09/5Mailing List
https://www.zerodayinitiative.com/advisories/ZDI-22-1118/Third Party Advisory, VDB Entry
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586Third Party Advisory
https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/#tMailing List, Patch
https://ubuntu.com/security/notices/USN-5557-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-2Third Party Advisory
https://ubuntu.com/security/notices/USN-5562-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5564-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5565-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5566-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5567-1Third Party Advisory
https://ubuntu.com/security/notices/USN-5582-1Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/08/09/5Mailing List
https://www.vicarius.io/vsociety/posts/use-after-free-vulnerability-linked-chain-between-nft-tables-cve-2022-2586Exploit, Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-1118/Third Party Advisory, VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-2586US Government Resource

Timeline

Published: Jan 8, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2022-2586?

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.

How severe is CVE-2022-2586?

CVE-2022-2586 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 12.75% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2022-2586?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-2586?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST