CVE-2022-2586: Linux Kernel Use-After-Free Vulnerability

CVE-2022-2586 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2024-06-26

A use-after-free vulnerability in the Linux Kernel's netfilter (nft_object) occurs when an object or expression references a set on a different table. When that table is deleted, the reference remains, allowing local attackers to escalate privileges.

Technologies: Linux Kernel. Vendors: Linux.

Quick answers

Is CVE-2022-2586 exploited in the wild?
Yes. CVE-2022-2586 is known to be exploited in the wild, first recorded on 26 June 2024. Treat it as urgent.
How severe is CVE-2022-2586?
Critical severity, with a CVSS score of 7.8, published 26 June 2024.
Which products and versions are affected?
Linux Linux Kernel up to (including) 5.19.17, 6.0; Canonical Ubuntu Linux 14.04 ESM, 16.04 ESM, 18.04 ESM, 20.04 LTS.
Is there a fix for CVE-2022-2586?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2022-2586 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2022-2586?
Check whether you run Linux Kernel. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Linux Linux Kernel up to (including) 5.19.17, 6.0
  • Canonical Ubuntu Linux 14.04 ESM, 16.04 ESM, 18.04 ESM, 20.04 LTS

Timeline

  • 2022-08-09: disclosed: Public disclosure via oss-security mailing list.
  • 2024-06-26: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
  • 2024-07-17: other: CISA due date for remediation.

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