CVE-2024-41023

Service interruption via canceled deadline timer reference leak

Published Jul 29, 2024 · Updated May 23, 2026

Memory leakage in the deadline scheduler in affected Linux kernels allows local users to exhaust kernel memory by repeatedly canceling timers. start_dl_timer() takes a task_struct reference, but enqueue_task_dl() can cancel the pending dl_task_timer without releasing that reference. Local low-privileged access and repeated execution of the deadline-scheduling path are required, and sustained leakage can interrupt the system.

CVSS severity5.5
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory leakage in the deadline scheduler in affected Linux kernels allows local users to exhaust kernel memory by repeatedly canceling timers. start_dl_timer() takes a task_struct reference, but enqueue_task_dl() can cancel the pending dl_task_timer without releasing that reference. Local low-privileged access and repeated execution of the deadline-scheduling path are required, and sustained leakage can interrupt the system.

The record

CVE
CVE-2024-41023
Published
Jul 29, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=184c8ab5342450c4ae6fc5d937f9bb06c620dcf1
  2. Affected versionversion=4.19.257 <4.20
  3. Affected versionversion=5.10
  4. Affected versionversion=5.4.212 <5.5
  5. Affected versionversion=f0e1c1d8ff908a39dd42e723d08f104505dfa601
  6. Affected versionversion=feff2e65efd8d84cf831668e182b2ce73c604bbb <7a54d31face626f62de415ebe77b43f76c3ffaf4
  7. Affected versionversion=feff2e65efd8d84cf831668e182b2ce73c604bbb <b58652db66c910c2245f5bee7deca41c12d707b9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=184c8ab5342450c4ae6fc5d937f9bb06c620dcf1; version=4.19.257 <4.20; version=5.10; version=5.4.212 <5.5; version=f0e1c1d8ff908a39dd42e723d08f104505dfa601; version=feff2e65efd8d84cf831668e182b2ce73c604bbb <7a54d31face626f62de415ebe77b43f76c3ffaf4; version=feff2e65efd8d84cf831668e182b2ce73c604bbb <b58652db66c910c2245f5bee7deca41c12d707b9

Published CVSS scores

5.5UbuntuCVSS: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.

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo