CVE-2024-50155

Kernel workqueue hang via unyielding trap reporting

Published Nov 7, 2024 · Updated May 23, 2026

Denial of service in Linux netdevsim allows local users to stall kernel work processing by creating hundreds of simulated ports. The nsim_dev_trap_report_work function loops over the ports on the shared system workqueue without rescheduling, allowing an oversized port set to monopolize the worker. Local access and the ability to create many netdevsim ports are required; the observed consequence is a kernel task blocked for more than 143 seconds.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux netdevsim allows local users to stall kernel work processing by creating hundreds of simulated ports. The nsim_dev_trap_report_work function loops over the ports on the shared system workqueue without rescheduling, allowing an oversized port set to monopolize the worker. Local access and the ability to create many netdevsim ports are required; the observed consequence is a kernel task blocked for more than 143 seconds.

The record

CVE
CVE-2024-50155
Published
Nov 7, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 7, 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

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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=0193e0660cc6689c794794b471492923cfd7bfbc <24973f4b64f93232a48fe78029385de762a2418d
  2. Affected versionversion=6.1.78 <6.1.115
  3. Affected versionversion=6.6.17 <6.6.59
  4. Affected versionversion=6.7.5 <6.8
  5. Affected versionversion=6.8
  6. Affected versionversion=6eecddd9c3c8d6e3a097531cdc6d500335b35e46 <681ce79ab6fba2f8d1c5ea60239f0086baebd0d3
  7. Affected versionversion=ba5e1272142d051dcc57ca1d3225ad8a089f9858 <32f054f93937b548c61b3bf57d8f4aefc50f3b16
  8. Affected versionversion=ba5e1272142d051dcc57ca1d3225ad8a089f9858 <a1494d532e28598bde7a5544892ef9c7dbfafa93
  9. Affected versionversion=d91964cdada76740811b7c621239f9c407820dbc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0193e0660cc6689c794794b471492923cfd7bfbc <24973f4b64f93232a48fe78029385de762a2418d; version=6.1.78 <6.1.115; version=6.6.17 <6.6.59; version=6.7.5 <6.8; version=6.8; version=6eecddd9c3c8d6e3a097531cdc6d500335b35e46 <681ce79ab6fba2f8d1c5ea60239f0086baebd0d3; version=ba5e1272142d051dcc57ca1d3225ad8a089f9858 <32f054f93937b548c61b3bf57d8f4aefc50f3b16; version=ba5e1272142d051dcc57ca1d3225ad8a089f9858 <a1494d532e28598bde7a5544892ef9c7dbfafa93; version=d91964cdada76740811b7c621239f9c407820dbc

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

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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