CVE-2022-2586
CVE-2022-2586 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.3. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2024-06-26). The underlying weakness is classified as CWE-416.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 13% (96th percentile)
- Actively exploited: Yes — listed in CISA KEV (added 2024-06-26)
- EU (EUVD) id: EUVD-2022-34835
- EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2024-06-26)
- Weakness: CWE-416
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
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 3.x base score of 5.3, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
- Is CVE-2022-2586 being actively exploited?
- Yes. CVE-2022-2586 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2024-06-26, which means active exploitation has been confirmed. It should be prioritised for remediation.
- What products are affected by CVE-2022-2586?
- CVE-2022-2586 primarily affects Linux Linux Kernel. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-2586?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
- Does CVE-2022-2586 have an EU (EUVD) identifier?
- Yes. CVE-2022-2586 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-34835. It is also flagged as exploited in the EUVD (since 2024-06-26).
- When was CVE-2022-2586 published?
- CVE-2022-2586 was published on 2024-01-08 and last updated on 2026-06-17.
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586
- https://lore.kernel.org/netfilter-devel/[email protected]/T/#t
- https://ubuntu.com/security/notices/USN-5557-1
- https://ubuntu.com/security/notices/USN-5560-1
- https://ubuntu.com/security/notices/USN-5560-2
- https://ubuntu.com/security/notices/USN-5562-1
- https://ubuntu.com/security/notices/USN-5564-1
- https://ubuntu.com/security/notices/USN-5565-1
- https://ubuntu.com/security/notices/USN-5566-1
- https://ubuntu.com/security/notices/USN-5567-1
- https://ubuntu.com/security/notices/USN-5582-1
- https://www.openwall.com/lists/oss-security/2022/08/09/5
- https://www.zerodayinitiative.com/advisories/ZDI-22-1118/
- https://www.vicarius.io/vsociety/posts/use-after-free-vulnerability-linked-chain-between-nft-tables-cve-2022-2586
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-2586
Affected products (7)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*
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- CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
- CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
- CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
- CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…