CVE-2024-26614

Local service interruption via accept-queue spinlock race

Published Feb 29, 2024 · Updated Aug 5, 2026

A race condition in the Linux kernel allows local users to interrupt service through concurrent TCP socket operations. The inet_csk_listen_start path calls reqsk_queue_alloc to reinitialize rskq_lock and fastopenq.lock while ACK processing can already hold them. A local low-privileged user must race socket shutdown or disconnect against TCP handshake completion, corrupting lock state and kernel availability.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in the Linux kernel allows local users to interrupt service through concurrent TCP socket operations. The inet_csk_listen_start path calls reqsk_queue_alloc to reinitialize rskq_lock and fastopenq.lock while ACK processing can already hold them. A local low-privileged user must race socket shutdown or disconnect against TCP handshake completion, corrupting lock state and kernel availability.

The record

CVE
CVE-2024-26614
Published
Feb 29, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 29, 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=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <168e7e599860654876c2a1102a82610285c02f02
  2. Affected versionversion=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <198bc90e0e734e5f98c3d2833e8390cac3df61b2
  3. Affected versionversion=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <3982fe726a63fb3de6005e534e2ac8ca7e0aca2a
  4. Affected versionversion=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <b1e0a68a0cd2a83259c444f638b417a8fffc6855
  5. Affected versionversion=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <bc99dcedd2f422d602516762b96c8ef1ae6b2882
  6. Affected versionversion=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <d86cc6ab33b085eaef27ea88b78fc8e2375c0ef3
  7. Affected versionversion=3.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <168e7e599860654876c2a1102a82610285c02f02; version=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <198bc90e0e734e5f98c3d2833e8390cac3df61b2; version=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <3982fe726a63fb3de6005e534e2ac8ca7e0aca2a; version=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <b1e0a68a0cd2a83259c444f638b417a8fffc6855; version=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <bc99dcedd2f422d602516762b96c8ef1ae6b2882; version=168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef <d86cc6ab33b085eaef27ea88b78fc8e2375c0ef3; version=3.7

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.3Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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-667Improper Locking
T1499Endpoint Denial of Service

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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