---
id: CVE-2026-97518
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: cfg80211: reject duplicate wiphy cipher suite entries

  Duplicate entries in wiphy->cipher_suites do not describe any
  additional capability, but cfg80211 currently…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: cfg80211: reject duplicate wiphy cipher suite entries

  Duplicate entries in wiphy->cipher_suites do not describe any
  additional capability, but cfg80211 currently…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    1305f8b925fe92edf5fec183588dfc7db719180b
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    7187d145d9042b037e4f10538f70cf95e380219f
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T17:17:29.787'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97518'
references:
  - url: 'https://git.kernel.org/stable/c/1305f8b925fe92edf5fec183588dfc7db719180b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7187d145d9042b037e4f10538f70cf95e380219f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T16:47:15.859Z'
---

## Overview

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

wifi: cfg80211: reject duplicate wiphy cipher suite entries

Duplicate entries in wiphy->cipher_suites do not describe any
additional capability, but cfg80211 currently accepts them and leaves
individual consumers to deal with them.

One such consumer is the WEXT compatibility code, which appends a WEP
key length for each WEP cipher entry it sees. Repeated WEP entries can
therefore overflow the fixed iw_range::encoding_size array returned by
SIOCGIWRANGE.

Reject duplicate cipher suite entries in wiphy_register() instead.
This keeps the cipher suite invariant in one place and makes malformed
wiphy descriptions fail early with -EINVAL, rather than relying on a
single cfg80211 user to handle duplicates correctly.

## Remediation

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