---
id: CVE-2025-68188
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  tcp: use dst_dev_rcu() in tcp_fastopen_active_disable_ofo_check()

  Use RCU to avoid a pair of atomic operations and a potential
  UAF on dst_dev()->flags.
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  tcp: use dst_dev_rcu() in tcp_fastopen_active_disable_ofo_check()

  Use RCU to avoid a pair of atomic operations and a potential
  UAF on dst_dev()->flags.
severity: none
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-2025-68188'
references:
  - url: 'https://git.kernel.org/stable/c/06da08d9355bf8e2070459bbedbe372ccc02cc0e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b62a59c18b692f892dcb8109c1c2e653b2abc95c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bc2b881a0896c111c1041d8bb1f92a3b3873ace5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00199
epssPercentile: 0.08998
ingestedAt: '2026-10-14T13:30:58.449Z'
---

## Overview

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

tcp: use dst_dev_rcu() in tcp_fastopen_active_disable_ofo_check()

Use RCU to avoid a pair of atomic operations and a potential
UAF on dst_dev()->flags.

## Remediation

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