CVE-2024-50166

Service interruption via unreleased FMan device references

Published Nov 7, 2024 · Updated May 11, 2026

Reference leaks in the Linux kernel FMan MAC driver from 4.5 allow local users to interrupt service through driver error paths. mac_probe() calls of_find_device_by_node(), fman_bind(), and fman_port_bind() to acquire of_dev->dev references, but its error paths and mac_remove() omit corresponding releases. Local low-privilege access and an affected FMan MAC driver are required; accumulated references consume kernel resources and can cause availability loss.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference leaks in the Linux kernel FMan MAC driver from 4.5 allow local users to interrupt service through driver error paths. mac_probe() calls of_find_device_by_node(), fman_bind(), and fman_port_bind() to acquire of_dev->dev references, but its error paths and mac_remove() omit corresponding releases. Local low-privilege access and an affected FMan MAC driver are required; accumulated references consume kernel resources and can cause availability loss.

The record

CVE
CVE-2024-50166
Published
Nov 7, 2024
Updated
May 11, 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 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=3933961682a30ae7d405cda344c040a129fea422 <1dec67e0d9fbb087c2ab17bf1bd17208231c3bb1
  2. Affected versionversion=3933961682a30ae7d405cda344c040a129fea422 <3c2a3619d565fe16bf59b0a047bab103a2ee4490
  3. Affected versionversion=3933961682a30ae7d405cda344c040a129fea422 <5ed4334fc9512f934fe2ae9c4cf7f8142e451b8b
  4. Affected versionversion=4.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3933961682a30ae7d405cda344c040a129fea422 <1dec67e0d9fbb087c2ab17bf1bd17208231c3bb1; version=3933961682a30ae7d405cda344c040a129fea422 <3c2a3619d565fe16bf59b0a047bab103a2ee4490; version=3933961682a30ae7d405cda344c040a129fea422 <5ed4334fc9512f934fe2ae9c4cf7f8142e451b8b; version=4.5

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

T1499Endpoint Denial of Service

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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