---
id: CVE-2025-22057
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: decrease cached dst counters in dst_release

  Upstream fix ac888d58869b ("net: do not delay dst_entries_add() in
  dst_release()") moved decrementing the dst count fr…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: decrease cached dst counters in dst_release

  Upstream fix ac888d58869b ("net: do not delay dst_entries_add() in
  dst_release()") moved decrementing the dst count fr…
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_kernel
affected:
  - 'linux_kernel >= 4.6, < 6.6.87'
  - 'linux_kernel >= 6.7, < 6.12.23'
  - 'linux_kernel >= 6.13, < 6.13.11'
  - 'linux_kernel >= 6.14, < 6.14.2'
patched:
  - linux_kernel 6.14.2
published: '2025-04-16'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:18:14.350'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-22057'
references:
  - url: 'https://git.kernel.org/stable/c/3a0a3ff6593d670af2451ec363ccb7b18aec0c0a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/836415a8405c9665ae55352fc5ba865c242f5e4f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/92a5c18513117be69bc00419dd1724c1940f8fcd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ccc331fd5bcae131d2627d5ef099d4a1f6540aea'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e833e7ad64eb2f63867f65303be49ca30ee8819e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/973bb0bc6240b55e313248ef3c6aa551ab7bb735'
tags:
  - nvd
  - cve.org
epss: 0.00213
epssPercentile: 0.1151
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T21:44:18.222733Z'
ingestedAt: '2026-10-15T22:48:25.473Z'
---

## Overview

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

net: decrease cached dst counters in dst_release

Upstream fix ac888d58869b ("net: do not delay dst_entries_add() in
dst_release()") moved decrementing the dst count from dst_destroy to
dst_release to avoid accessing already freed data in case of netns
dismantle. However in case CONFIG_DST_CACHE is enabled and OvS+tunnels
are used, this fix is incomplete as the same issue will be seen for
cached dsts:

  Unable to handle kernel paging request at virtual address ffff5aabf6b5c000
  Call trace:
   percpu_counter_add_batch+0x3c/0x160 (P)
   dst_release+0xec/0x108
   dst_cache_destroy+0x68/0xd8
   dst_destroy+0x13c/0x168
   dst_destroy_rcu+0x1c/0xb0
   rcu_do_batch+0x18c/0x7d0
   rcu_core+0x174/0x378
   rcu_core_si+0x18/0x30

Fix this by invalidating the cache, and thus decrementing cached dst
counters, in dst_release too.

## Affected

- `linux_kernel >= 4.6, < 6.6.87`
- `linux_kernel >= 6.7, < 6.12.23`
- `linux_kernel >= 6.13, < 6.13.11`
- `linux_kernel >= 6.14, < 6.14.2`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.14.2`