CVE-2024-53047

Local service interruption via unlocked MPTCP scheduler traversal

Published Nov 19, 2024 · Updated May 11, 2026

Improper locking in the MPTCP subsystem in Linux allows local users to interrupt service by creating an MPTCP socket. mptcp_init_sock calls mptcp_sched_find to traverse an RCU-protected scheduler list without surrounding rcu_read_lock and rcu_read_unlock calls. The reported warning requires CONFIG_PROVE_RCU_LIST and CONFIG_RCU_EXPERT; published evidence does not specify whether non-debug kernels hang or crash.

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

Improper locking in the MPTCP subsystem in Linux allows local users to interrupt service by creating an MPTCP socket. mptcp_init_sock calls mptcp_sched_find to traverse an RCU-protected scheduler list without surrounding rcu_read_lock and rcu_read_unlock calls. The reported warning requires CONFIG_PROVE_RCU_LIST and CONFIG_RCU_EXPERT; published evidence does not specify whether non-debug kernels hang or crash.

The record

CVE
CVE-2024-53047
Published
Nov 19, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 19, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=1730b2b2c5a5a886007b247366aebe0976dc8881 <3deb12c788c385e17142ce6ec50f769852fcec65
  2. Affected versionversion=1730b2b2c5a5a886007b247366aebe0976dc8881 <494eb22f9a7bd03783e60595a57611c209175f1a
  3. Affected versionversion=1730b2b2c5a5a886007b247366aebe0976dc8881 <cb8b81ad3e893a6d18dcdd3754cc2ea2a42c0136
  4. Affected versionversion=6.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1730b2b2c5a5a886007b247366aebe0976dc8881 <3deb12c788c385e17142ce6ec50f769852fcec65; version=1730b2b2c5a5a886007b247366aebe0976dc8881 <494eb22f9a7bd03783e60595a57611c209175f1a; version=1730b2b2c5a5a886007b247366aebe0976dc8881 <cb8b81ad3e893a6d18dcdd3754cc2ea2a42c0136; version=6.6

Published CVSS scores

5.5CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-667Improper Locking

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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