---
id: CVE-2026-98899
title: 'netfilter: ipset: mark the rcu locked areas properly'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: ipset: mark the rcu locked areas properly

  When we bump the uref counter, there's no need to keep
  the rcu lock because the referred hash table can't
  disappea…
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'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 <
    67bd3d2350d17c2f4fb158c3f917c10b15ecbc94
  - >-
    Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 <
    892399abd1a005a455d5b74d86d82b9773405f2b
  - >-
    Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 <
    eee5172741b2c0e73210020732043e5d589295d3
  - >-
    Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 <
    ecb48c6b9edc78de8dd456c365727ae14b88c1ee
  - >-
    Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 <
    0c46c9ce24130657ec7460c27fba5d445f5abd06
  - >-
    Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 <
    ca9fab1ca15534cef1630e81a479e94b3bbcdb6a
  - >-
    Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 <
    5d0c22e73656d050daffad10a2ba8765ce8441c8
  - Linux 5dd9488ae41070b69d2f4acb580f77db5705f9ca
  - Linux a469bab3386aebff33c59506f3a95e35b91118fd
  - Linux >= 5.4.24 < 5.5
  - Linux >= 5.5.8 < 5.6
  - Linux 5.6
published: '2026-10-23'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T06:56:26.708Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98899'
references:
  - url: 'https://git.kernel.org/stable/c/67bd3d2350d17c2f4fb158c3f917c10b15ecbc94'
  - url: 'https://git.kernel.org/stable/c/892399abd1a005a455d5b74d86d82b9773405f2b'
  - url: 'https://git.kernel.org/stable/c/eee5172741b2c0e73210020732043e5d589295d3'
  - url: 'https://git.kernel.org/stable/c/ecb48c6b9edc78de8dd456c365727ae14b88c1ee'
  - url: 'https://git.kernel.org/stable/c/0c46c9ce24130657ec7460c27fba5d445f5abd06'
  - url: 'https://git.kernel.org/stable/c/ca9fab1ca15534cef1630e81a479e94b3bbcdb6a'
  - url: 'https://git.kernel.org/stable/c/5d0c22e73656d050daffad10a2ba8765ce8441c8'
tags:
  - cve.org
epss: 0.00169
epssPercentile: 0.06286
ingestedAt: '2026-10-23T13:24:55.575Z'
---

## Overview

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

netfilter: ipset: mark the rcu locked areas properly

When we bump the uref counter, there's no need to keep
the rcu lock because the referred hash table can't
disappear. Also, from the same reason in mtype_gc we
need the rcu lock and not a spinlock.

## Affected

- `Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 < 67bd3d2350d17c2f4fb158c3f917c10b15ecbc94`
- `Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 < 892399abd1a005a455d5b74d86d82b9773405f2b`
- `Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 < eee5172741b2c0e73210020732043e5d589295d3`
- `Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 < ecb48c6b9edc78de8dd456c365727ae14b88c1ee`
- `Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 < 0c46c9ce24130657ec7460c27fba5d445f5abd06`
- `Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 < ca9fab1ca15534cef1630e81a479e94b3bbcdb6a`
- `Linux >= f66ee0410b1c3481ee75e5db9b34547b4d582465 < 5d0c22e73656d050daffad10a2ba8765ce8441c8`
- `Linux 5dd9488ae41070b69d2f4acb580f77db5705f9ca`
- `Linux a469bab3386aebff33c59506f3a95e35b91118fd`
- `Linux >= 5.4.24 < 5.5`
- `Linux >= 5.5.8 < 5.6`
- `Linux 5.6`

## Remediation

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