CVE-2024-27019

Kernel privilege escalation via nf_tables object-type race

Published May 1, 2024 · Updated Aug 5, 2026

Use-after-free in Linux kernel nf_tables from 4.10 allows local users to crash the kernel or execute code with kernel privileges. __nft_obj_type_get() traverses nf_tables_objects without RCU protection while nft_unregister_obj() can remove and free the same entry, leaving stale object-type pointers. A local unprivileged process can reach the race through nf_tables netlink messages in a user and network namespace, with consequences ranging from kernel panic to control-flow hijacking.

CVSS severity7.8
High
EPSS probability0.21%
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 Linux kernel nf_tables from 4.10 allows local users to crash the kernel or execute code with kernel privileges. __nft_obj_type_get() traverses nf_tables_objects without RCU protection while nft_unregister_obj() can remove and free the same entry, leaving stale object-type pointers. A local unprivileged process can reach the race through nf_tables netlink messages in a user and network namespace, with consequences ranging from kernel panic to control-flow hijacking.

The record

CVE
CVE-2024-27019
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=4.10
  2. Affected versionversion=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <379bf7257bc5f2a1b1ca8514e08a871b7bf6d920
  3. Affected versionversion=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <4ca946b19caf655a08d5e2266d4d5526025ebb73
  4. Affected versionversion=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <ad333578f736d56920e090d7db1f8dec891d815e
  5. Affected versionversion=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <cade34279c2249eafe528564bd2e203e4ff15f88
  6. Affected versionversion=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <d78d867dcea69c328db30df665be5be7d0148484
  7. Affected versionversion=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <df7c0fb8c2b9f9cac65659332581b19682a71349

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <379bf7257bc5f2a1b1ca8514e08a871b7bf6d920; version=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <4ca946b19caf655a08d5e2266d4d5526025ebb73; version=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <ad333578f736d56920e090d7db1f8dec891d815e; version=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <cade34279c2249eafe528564bd2e203e4ff15f88; version=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <d78d867dcea69c328db30df665be5be7d0148484; version=e50092404c1bc7aaeb0a0f4077fa6f07b073a20f <df7c0fb8c2b9f9cac65659332581b19682a71349

Published CVSS scores

5.5OracleCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7UbuntuCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
7.8Linux kernel CNACVSS: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

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499Endpoint Denial of Service
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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