CVE-2024-50100

Local task hang via missed hrtimer restart

Published Nov 5, 2024 · Updated May 11, 2026

Race condition in Linux 6.10 through 6.11.4 allows local users to hang kernel tasks through the dummy-hcd USB gadget driver. The dummy_urb_enqueue() path treats hrtimer_active() as equivalent to timer_pending(), so an expiring callback can suppress a required timer restart and strand a newly queued URB. The flaw requires local low-privilege access to exercise dummy-hcd, and a later usb_kill_urb() call hangs while attempting to dequeue the stranded URB.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Linux 6.10 through 6.11.4 allows local users to hang kernel tasks through the dummy-hcd USB gadget driver. The dummy_urb_enqueue() path treats hrtimer_active() as equivalent to timer_pending(), so an expiring callback can suppress a required timer restart and strand a newly queued URB. The flaw requires local low-privilege access to exercise dummy-hcd, and a later usb_kill_urb() call hangs while attempting to dequeue the stranded URB.

The record

CVE
CVE-2024-50100
Published
Nov 5, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 5, 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=4a4cb56556124027f4846ff30849c0ede981aa92 <7d85884576a3be3616c260fc1fa862a59579d1ab
  2. Affected versionversion=6.10
  3. Affected versionversion=8ffba8d917f44a8acbfccbdec331204353ac8ac8 <cf7ee2291da551fc4b109fda1f6a332cb8212065
  4. Affected versionversion=a7f3813e589fd8e2834720829a47b5eb914a9afe <5189df7b8088268012882c220d6aca4e64981348
  5. Affected versionversion=a7f3813e589fd8e2834720829a47b5eb914a9afe <f828205ee3e4ddc712a13fba6c9902d51e91ddaf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4a4cb56556124027f4846ff30849c0ede981aa92 <7d85884576a3be3616c260fc1fa862a59579d1ab; version=6.10; version=8ffba8d917f44a8acbfccbdec331204353ac8ac8 <cf7ee2291da551fc4b109fda1f6a332cb8212065; version=a7f3813e589fd8e2834720829a47b5eb914a9afe <5189df7b8088268012882c220d6aca4e64981348; version=a7f3813e589fd8e2834720829a47b5eb914a9afe <f828205ee3e4ddc712a13fba6c9902d51e91ddaf

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS: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

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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

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

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Your stack

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