CVE-2022-2586

Exp

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.

Published: 2024-01-08 Last update: 2025-10-28 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-2586 is rated Critical Active Threat (84.7/100): CVSS Medium severity, with high exploitation likelihood (EPSS 12.75%, 96th percentile). CISA KEV confirms active exploitation (added 2024-06-26) affecting Linux / Kernel. a weakness (CWE-416) Unauthenticated remote administrative access may be possible. EPSS rose +10.00% over the last day, indicating growing attacker interest. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2022-2586

Name: Linux Kernel Use-After-Free Vulnerability · CISA KEV detail

Exploit added: 2024-06-26

Action due: 2024-07-17

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

Public exploit references (Exploit-DB) for CVE-2022-2586

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-2586

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.75% 12.75% +10.00%
2 2026-06-07 2.82% 2.75% -0.07%
3 2026-05-29 — 2.82% —

Full EPSS history (94 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-2586

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.0 4.2 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2022-2586

OS Trackers for CVE-2022-2586

vendor priority summary link
debian not yet assigned CVE-2022-2586 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-2586
redhat medium — https://access.redhat.com/security/cve/CVE-2022-2586
suse medium — https://www.suse.com/security/cve/CVE-2022-2586/
ubuntu high CVE-2022-2586 high priority: Ubuntu including 167 source packages (linux, linux-allwinner, …), 1963 status rows across 14 suites (bionic, focal, hirsute, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1505, released 207, not-affected 168, ignored 83. https://ubuntu.com/security/CVE-2022-2586

Affected software / configurations for CVE-2022-2586

Vendor Product Version Raw CPE
linux linux_kernel <= 5.19.17 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel 6.0 cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 20.04 cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 22.04 cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*

References for CVE-2022-2586

URL Tags
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586 Third Party Advisory
https://lore.kernel.org/netfilter-devel/[email protected]/T/#t Mailing List Patch
https://ubuntu.com/security/notices/USN-5557-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-2 Third Party Advisory
https://ubuntu.com/security/notices/USN-5562-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5564-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5565-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5566-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5567-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5582-1 Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/08/09/5 Mailing List
https://www.zerodayinitiative.com/advisories/ZDI-22-1118/ Third Party Advisory VDB Entry
https://www.vicarius.io/vsociety/posts/use-after-free-vulnerability-linked-chain-between-nft-tables-cve-2022-2586 Exploit Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-2586 US Government Resource
cvelogic Threat Intelligence