CVE-2024-27404Network attack vector

Kernel disruption via remote_id data race

Published May 17, 2024 · Updated Aug 5, 2026

Race condition in the Linux kernel MPTCP path manager allows remote attackers to disrupt kernel operation through concurrent subflow activity. Connection and path-manager code reads and writes subflow remote_id values without READ_ONCE and WRITE_ONCE annotations, permitting unsynchronized identifier access. MPTCP must be enabled and exercised; public advisories do not identify whether exploitation produces a hang, crash, reboot, or another observable failure.

CVSS severity8.2
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux kernel MPTCP path manager allows remote attackers to disrupt kernel operation through concurrent subflow activity. Connection and path-manager code reads and writes subflow remote_id values without READ_ONCE and WRITE_ONCE annotations, permitting unsynchronized identifier access. MPTCP must be enabled and exercised; public advisories do not identify whether exploitation produces a hang, crash, reboot, or another observable failure.

The record

CVE
CVE-2024-27404
Published
May 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 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=6.0
  2. Affected versionversion=bedee0b561138346967cf1443f2afd1b48b3148f <2dba5774e8ed326a78ad4339d921a4291281ea6e
  3. Affected versionversion=bedee0b561138346967cf1443f2afd1b48b3148f <967d3c27127e71a10ff5c083583a038606431b61
  4. Affected versionversion=bedee0b561138346967cf1443f2afd1b48b3148f <987c3ed7297e5661bc7f448f06fc366e497ac9b2
  5. Affected versionversion=bedee0b561138346967cf1443f2afd1b48b3148f <e64148635509bf13eea851986f5a0b150e5bd066

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=bedee0b561138346967cf1443f2afd1b48b3148f <2dba5774e8ed326a78ad4339d921a4291281ea6e; version=bedee0b561138346967cf1443f2afd1b48b3148f <967d3c27127e71a10ff5c083583a038606431b61; version=bedee0b561138346967cf1443f2afd1b48b3148f <987c3ed7297e5661bc7f448f06fc366e497ac9b2; version=bedee0b561138346967cf1443f2afd1b48b3148f <e64148635509bf13eea851986f5a0b150e5bd066

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
8.2kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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