CVE-2022-39190

System crash via repeated nftables chain binding

Published Sep 2, 2022 · Updated Aug 3, 2024

Denial of service in the Linux kernel before 5.19.6 allows local users to crash the system by binding to an already bound nftables chain. nft_verdict_init() failed to reject a verdict-chain reference when nft_chain_is_bound() was already true, permitting an invalid second binding. Exploitation requires local low-privileged access to load netfilter rules, and the bounded consequence is a system crash rather than data access or modification.

CVSS severity5.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel before 5.19.6 allows local users to crash the system by binding to an already bound nftables chain. nft_verdict_init() failed to reject a verdict-chain reference when nft_chain_is_bound() was already true, permitting an invalid second binding. Exploitation requires local low-privileged access to load netfilter rules, and the bounded consequence is a system crash rather than data access or modification.

The record

CVE
CVE-2022-39190
Published
Sep 2, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-392, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-392Missing Report of Error Condition
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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