CVE-2024-47747

Kernel memory corruption via uncanceled ether3 timer

Published Oct 21, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel ether3 driver allows local users to corrupt kernel memory during concurrent device removal. ether3_remove frees the net_device without canceling its LED timer, so ether3_ledoff can dereference the freed device and access its register state. Triggering the race requires local device or module removal while the timer callback is running; no more specific consequence is established.

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

Use-after-free in the Linux kernel ether3 driver allows local users to corrupt kernel memory during concurrent device removal. ether3_remove frees the net_device without canceling its LED timer, so ether3_ledoff can dereference the freed device and access its register state. Triggering the race requires local device or module removal while the timer callback is running; no more specific consequence is established.

The record

CVE
CVE-2024-47747
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
Siemens
Product
SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=0 <V3.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familyversion=0 <V3.2
Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=4.15; version=6fd9c53f71862a4797b7ed8a5de80e2c64829f56 <1c57d61a43293252ad732007c7070fdb112545fd; version=6fd9c53f71862a4797b7ed8a5de80e2c64829f56 <25d559ed2beec9b34045886100dac46d1ad92eba; version=6fd9c53f71862a4797b7ed8a5de80e2c64829f56 <338a0582b28e69460df03af50e938b86b4206353; version=6fd9c53f71862a4797b7ed8a5de80e2c64829f56 <516dbc6d16637430808c39568cbb6b841d32b55b; version=6fd9c53f71862a4797b7ed8a5de80e2c64829f56 <77a77331cef0a219b8dd91361435eeef04cb741c; version=6fd9c53f71862a4797b7ed8a5de80e2c64829f56 <822c7bb1f6f8b0331e8d1927151faf8db3b33afd; version=6fd9c53f71862a4797b7ed8a5de80e2c64829f56 <b5109b60ee4fcb2f2bb24f589575e10cc5283ad4; version=6fd9c53f71862a4797b7ed8a5de80e2c64829f56 <b5a84b6c772564c8359a9a0fbaeb2a2944aa1ee9; version=6fd9c53f71862a4797b7ed8a5de80e2c64829f56 <d2abc379071881798d20e2ac1d332ad855ae22f3
Siemens · SCALANCE XCM/XRM/XCH/XRH-300 familyversion=0 <V3.2
Siemens · RUGGEDCOM RST2428Pversion=0 <V3.2

Published CVSS scores

7.8Linux kernel CNACVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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