What is CVE-2022-2586?

CVE-2022-2586 is a medium-severity vulnerability in The Linux Kernel Organization, classified under Use After Free. CVSS score: 5.3/10. Published 2024-01-08.

How severe is CVE-2022-2586?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2022-2586 known to be exploited?

Yes. CVE-2022-2586 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-06-26), indicating it is being actively exploited. 49 public proof-of-concept repositories are indexed.

Use After Free in The Linux Kernel Organization

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.

Vulnerability class: Use-After-Free

EPSS: 0.028 (86.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H.

Affected products

The Linux Kernel Organization — versions 0

Weakness classification (CWE)

CWE-416 — Use After Free

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2024-06-26. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2024-07-17.

Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Public proof-of-concept exploits

References

ubuntu.com/security/notices/USN-5564-1 (third-party-advisory)
ubuntu.com/security/notices/USN-5560-2 (third-party-advisory)
ubuntu.com/security/notices/USN-5582-1 (third-party-advisory)
ubuntu.com/security/notices/USN-5567-1 (third-party-advisory)
ubuntu.com/security/notices/USN-5560-1 (third-party-advisory)
ubuntu.com/security/notices/USN-5566-1 (third-party-advisory)
www.openwall.com/lists/oss-security/2022/08/09/5 (issue-tracking)
ubuntu.com/security/notices/USN-5565-1 (third-party-advisory)
www.zerodayinitiative.com/advisories/ZDI-22-1118/ (issue-tracking)
lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/… (issue-tracking)

Frequently asked questions

What is CVE-2022-2586?: CVE-2022-2586 is a medium-severity vulnerability in The Linux Kernel Organization, classified under Use After Free. CVSS score: 5.3/10. Published 2024-01-08.
How severe is CVE-2022-2586?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2022-2586 known to be exploited?: Yes. CVE-2022-2586 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-06-26), indicating it is being actively exploited. 49 public proof-of-concept repositories are indexed.