---
id: CVE-2026-74725
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  enic: fix tx_hang_reset use-after-free on device removal

  enic_remove() cancels the reset and change_mtu_work items but does not
  cancel tx_hang_reset
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  enic: fix tx_hang_reset use-after-free on device removal

  enic_remove() cancels the reset and change_mtu_work items but does not
  cancel tx_hang_reset. A TX timeout that…
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'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 937317c7c1097aa878a5000e3aab616eb5c590c0 <
    8619865f34fb3b130b567855382a5c4aadd522b9
  - >-
    Linux >= 937317c7c1097aa878a5000e3aab616eb5c590c0 <
    e506e704b74748ffd0e1c92a7453ca2a959f832b
  - >-
    Linux >= 937317c7c1097aa878a5000e3aab616eb5c590c0 <
    4f3464fc6c1f26afc504fd525c574f2bc14c9d42
  - >-
    Linux >= 937317c7c1097aa878a5000e3aab616eb5c590c0 <
    ec680ea4ba1bca92a767fb7e7869758bfdd886e3
  - Linux 4.4
published: '2026-08-22'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T20:17:54.887'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74725'
references:
  - url: 'https://git.kernel.org/stable/c/4f3464fc6c1f26afc504fd525c574f2bc14c9d42'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8619865f34fb3b130b567855382a5c4aadd522b9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e506e704b74748ffd0e1c92a7453ca2a959f832b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ec680ea4ba1bca92a767fb7e7869758bfdd886e3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00125
epssPercentile: 0.02189
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T19:15:41.206988Z'
ingestedAt: '2026-10-14T13:30:58.549Z'
---

## Overview

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

enic: fix tx_hang_reset use-after-free on device removal

enic_remove() cancels the reset and change_mtu_work items but does not
cancel tx_hang_reset. A TX timeout that fires while the device is being
removed can schedule enic_tx_hang_reset() so that it runs after
free_netdev(), resulting in a use-after-free.

cancel_work_sync() alone is not sufficient here: the still-live watchdog
and notify paths can re-schedule these work items in the window between
the cancel and unregister_netdev(). Use disable_work_sync(), which
cancels the work and blocks any subsequent schedule_work() from
requeuing it, and apply it to the reset and change_mtu_work items as
well so the same requeue race is closed for all teardown work.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.