CVE-2024-42109

Kernel compromise via stale nf_tables transaction reference

Published Jul 30, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel nf_tables subsystem allows local users to compromise the kernel through table-removal transactions. The notifier conditionally flushes pending work, leaving worker transactions referencing a removed table when nft_commit_release reads table->family. Low-privileged local access is required; successful exploitation can disclose or alter kernel memory or crash the host.

CVSS severity7.8
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel nf_tables subsystem allows local users to compromise the kernel through table-removal transactions. The notifier conditionally flushes pending work, leaving worker transactions referencing a removed table when nft_commit_release reads table->family. Low-privileged local access is required; successful exploitation can disclose or alter kernel memory or crash the host.

The record

CVE
CVE-2024-42109
Published
Jul 30, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2c9f0293280e258606e54ed2b96fa71498432eae <09e650c3a3a7d804430260510534ccbf71c75b2e
  2. Affected versionversion=2c9f0293280e258606e54ed2b96fa71498432eae <55a40406aac555defe9bdd0adec9508116ce7cb1
  3. Affected versionversion=2c9f0293280e258606e54ed2b96fa71498432eae <9f6958ba2e902f9820c594869bd710ba74b7c4c0
  4. Affected versionversion=4167aa477abcf62b0dfda51f3513280fa73cd588
  5. Affected versionversion=41841b585e53babdfb0fa6fdfa54f6d7c28c1206 <4c06c13317b9a08decedcd7aaf706691e336277c
  6. Affected versionversion=5.15.129 <5.15.163
  7. Affected versionversion=6.1.50 <6.1.98
  8. Affected versionversion=6.4.13 <6.5
  9. Affected versionversion=6.5
  10. Affected versionversion=f22954f8c58fd5f5489f5980796914e306757e77 <3325628cb36b7f216c5716e7b5124d9dc81199e4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2c9f0293280e258606e54ed2b96fa71498432eae <09e650c3a3a7d804430260510534ccbf71c75b2e; version=2c9f0293280e258606e54ed2b96fa71498432eae <55a40406aac555defe9bdd0adec9508116ce7cb1; version=2c9f0293280e258606e54ed2b96fa71498432eae <9f6958ba2e902f9820c594869bd710ba74b7c4c0; version=4167aa477abcf62b0dfda51f3513280fa73cd588; version=41841b585e53babdfb0fa6fdfa54f6d7c28c1206 <4c06c13317b9a08decedcd7aaf706691e336277c; version=5.15.129 <5.15.163; version=6.1.50 <6.1.98; version=6.4.13 <6.5; version=6.5; version=f22954f8c58fd5f5489f5980796914e306757e77 <3325628cb36b7f216c5716e7b5124d9dc81199e4

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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