Explore Insights How it works Contact us

© 2026 Anyday Security

FAQ Privacy Policy Terms of Use

Product names, logos and brands are property of their respective owners. They are used here for identification only and imply no affiliation or endorsement.

Explore Insights How it works Contact us

Vulnerability ID

CVE-2026-23231

AI Exploitable

Use-after-free in netfilter/nf_tables

ProductLinux kernel

CVSS 3.1High7.8

EPSS1.04%

Has public PoCYes

AI Exploitability

A working PoC was successfully generated by AI

Working AI PoC: Yes
Cheapest PoC: $46.81
Fastest PoC: 10.2 hr

Model Matrix Capability Breakdown Vulnerability Details Timeline Community

Model Matrix Capability Breakdown Vulnerability Details Timeline Community

Overview

netfilter: nf_tables: fix use-after-free in nf_tables_addchain() nf_tables_addchain() publishes the chain to table->chains via list_add_tail_rcu() (in nft_chain_add()) before registering hooks. If nf_tables_register_hook() then fails, the error path calls nft_chain_del() (list_del_rcu()) followed by nf_tables_chain_destroy() with no RCU grace period in between.

CWE: CWE-416
Weakness: Use After Free
Component: netfilter/nf_tables
Impact: Not stated
Published: 2026-05-04
Fixed version: 7.0

Risk factors

In-the-WildNot observed

CISA KEVNot listed

Public ExploitAvailable

Ransomware useNone known

Severity

CVSS 3.1Only version published

7.8High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability

Attack VectorLocal

ComplexityLow

Privileges RequiredLow

User InteractionNone

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

EPSS

Chance of exploitation in the next 30 days

1.04%

SSVC

Stakeholder-specific vulnerability categorization

Not scored. CISA publishes an SSVC decision for a subset of CVEs.