---
id: CVE-2025-68226
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  smb: client: fix incomplete backport in cfids_invalidation_worker()

  The previous commit bdb596ceb4b7 ("smb: client: fix potential UAF in
  smb2_close_cached_fid()") was …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  smb: client: fix incomplete backport in cfids_invalidation_worker()

  The previous commit bdb596ceb4b7 ("smb: client: fix potential UAF in
  smb2_close_cached_fid()") was …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
published: '2025-12-16'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-68226'
references:
  - url: 'https://git.kernel.org/stable/c/abd29b6e17a918fdd68352ce4813e167acc8727e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00351
epssPercentile: 0.26949
ingestedAt: '2026-10-14T13:30:58.459Z'
---

## Overview

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

smb: client: fix incomplete backport in cfids_invalidation_worker()

The previous commit bdb596ceb4b7 ("smb: client: fix potential UAF in
smb2_close_cached_fid()") was an incomplete backport and missed one
kref_put() call in cfids_invalidation_worker() that should have been
converted to close_cached_dir().

## Remediation

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