CVE-2022-2586
HIGHCVSS 7.8/10Actively ExploitedEPSS 10.46%
Last modified
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 10.46% 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
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.16, < 4.14.316 |
| Linux | Linux Kernel | >= 4.15, < 4.19.256 |
| Linux | Linux Kernel | >= 4.20, < 5.4.211 |
| Linux | Linux Kernel | >= 5.5, < 5.10.137 |
| Linux | Linux Kernel | >= 5.11, < 5.15.61 |
| Linux | Linux Kernel | >= 5.16, < 5.18.18 |
| Linux | Linux Kernel | >= 5.19, < 5.19.2 |
| 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://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.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://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.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
- Last Modified
- 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 10.46% 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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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