---
id: CVE-2024-47747
title: >-
  In the Linux kernel, the following vulnerability has been resolved:


  net: seeq: Fix use after free vulnerability in ether3 Driver Due to Race
  Condition


  In the ether3_probe function, a timer is initialized with a callback

  function ether3…
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  net: seeq: Fix use after free vulnerability in ether3 Driver Due to Race
  Condition


  In the ether3_probe function, a timer is initialized with a callback

  function ether3…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.15, < 5.10.227'
  - 'linux_kernel >= 5.11, < 5.15.168'
  - 'linux_kernel >= 5.16, < 6.1.113'
  - 'linux_kernel >= 6.2, < 6.6.54'
  - 'linux_kernel >= 6.7, < 6.10.13'
  - 'linux_kernel >= 6.11, < 6.11.2'
patched:
  - linux_kernel 6.11.2
published: '2024-10-21'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:18:58.027'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-47747'
references:
  - url: 'https://git.kernel.org/stable/c/1c57d61a43293252ad732007c7070fdb112545fd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/25d559ed2beec9b34045886100dac46d1ad92eba'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/338a0582b28e69460df03af50e938b86b4206353'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/516dbc6d16637430808c39568cbb6b841d32b55b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/77a77331cef0a219b8dd91361435eeef04cb741c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/822c7bb1f6f8b0331e8d1927151faf8db3b33afd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b5109b60ee4fcb2f2bb24f589575e10cc5283ad4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b5a84b6c772564c8359a9a0fbaeb2a2944aa1ee9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d2abc379071881798d20e2ac1d332ad855ae22f3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-355557.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00227
epssPercentile: 0.1333
ingestedAt: '2026-10-15T03:30:12.750Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-10-21T12:58:25.330423Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

net: seeq: Fix use after free vulnerability in ether3 Driver Due to Race Condition

In the ether3_probe function, a timer is initialized with a callback
function ether3_ledoff, bound to &prev(dev)->timer. Once the timer is
started, there is a risk of a race condition if the module or device
is removed, triggering the ether3_remove function to perform cleanup.
The sequence of operations that may lead to a UAF bug is as follows:

CPU0                                    CPU1

                      |  ether3_ledoff
ether3_remove         |
  free_netdev(dev);   |
  put_devic           |
  kfree(dev);         |
 |  ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2);
                      | // use dev

Fix it by ensuring that the timer is canceled before proceeding with
the cleanup in ether3_remove.

## Affected

- `linux_kernel >= 4.15, < 5.10.227`
- `linux_kernel >= 5.11, < 5.15.168`
- `linux_kernel >= 5.16, < 6.1.113`
- `linux_kernel >= 6.2, < 6.6.54`
- `linux_kernel >= 6.7, < 6.10.13`
- `linux_kernel >= 6.11, < 6.11.2`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.11.2`