CVE-2024-36244Public exploit

Local service interruption via undersized taprio cycle

Published Jun 21, 2024 · Updated May 23, 2026

Improper taprio cycle validation in the Linux kernel allows local users to interrupt service via a crafted traffic schedule. The taprio scheduler accepts a cycle time shorter than the aggregate minimum transmission time for all entries because validation covered only the sum of entry intervals. Reachability requires local low-privileged access to configure taprio; the malformed cycle can disrupt packet scheduling without exposing or modifying data.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper taprio cycle validation in the Linux kernel allows local users to interrupt service via a crafted traffic schedule. The taprio scheduler accepts a cycle time shorter than the aggregate minimum transmission time for all entries because validation covered only the sum of entry intervals. Reachability requires local low-privileged access to configure taprio; the malformed cycle can disrupt packet scheduling without exposing or modifying data.

The record

CVE
CVE-2024-36244
Published
Jun 21, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 21, 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=5.4.68 <5.5
  2. Affected versionversion=5.8.12 <5.9
  3. Affected versionversion=5.9
  4. Affected versionversion=817ff50796c5e364c879596509f83fcba194bb6f
  5. Affected versionversion=83bd58952b2b8543d8c48d1453975ab47a0a7504
  6. Affected versionversion=b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 <34d83c3e6e97867ae061d14eb52123404aab1cbc
  7. Affected versionversion=b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 <91f249b01fe490fce11fbb4307952ca8cce78724
  8. Affected versionversion=b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 <b939d1e04a90248b4cdf417b0969c270ceb992b2
  9. Affected versionversion=b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 <fb66df20a7201e60f2b13d7f95d031b31a8831d3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.4.68 <5.5; version=5.8.12 <5.9; version=5.9; version=817ff50796c5e364c879596509f83fcba194bb6f; version=83bd58952b2b8543d8c48d1453975ab47a0a7504; version=b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 <34d83c3e6e97867ae061d14eb52123404aab1cbc; version=b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 <91f249b01fe490fce11fbb4307952ca8cce78724; version=b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 <b939d1e04a90248b4cdf417b0969c270ceb992b2; version=b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 <fb66df20a7201e60f2b13d7f95d031b31a8831d3

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.

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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 exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

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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