Junglewise Threat Intelligence

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

Technologies: Linux Kernel. Vendors: Canonical, Linux.

Executive brief

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.

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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