---
id: CVE-2026-74467
title: 's390/qeth: Check CAP_NET_ADMIN for private ioctls'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  s390/qeth: Check CAP_NET_ADMIN for private ioctls

  Gate the SIOCDEVPRIVATE ioctl commands SIOC_QETH_ADP_SET_SNMP_CONTROL,
  SIOC_QETH_GET_CARD_TYPE and SIOC_QETH_QUERY_OA…
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 >= 18787eeebd7129ecf4960876d24f349682207783 <
    8fb69547924bbb3d7c900a0d7d137a7234db3f5f
  - >-
    Linux >= 18787eeebd7129ecf4960876d24f349682207783 <
    3ea5210db058347481c93849786982f874f7be2d
  - >-
    Linux >= 18787eeebd7129ecf4960876d24f349682207783 <
    4e48168825818bf4a13c743582227d15f1d30d04
  - >-
    Linux >= 18787eeebd7129ecf4960876d24f349682207783 <
    b40c74262f7e1e601221cebccdbdb2b392ff9976
  - >-
    Linux >= 18787eeebd7129ecf4960876d24f349682207783 <
    bd63c7879eaa87f1958f7ee027813356fcd9ff11
  - >-
    Linux >= 18787eeebd7129ecf4960876d24f349682207783 <
    93a0a846ec59a88e0c402878a15357a5ce430eb4
  - >-
    Linux >= 18787eeebd7129ecf4960876d24f349682207783 <
    d211028bac1bd0fff0026bfa2a8328e5b78cd0e6
  - Linux 5.15
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T18:57:09.912471Z'
published: '2026-08-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T19:05:47.339Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-74467'
references:
  - url: 'https://git.kernel.org/stable/c/8fb69547924bbb3d7c900a0d7d137a7234db3f5f'
  - url: 'https://git.kernel.org/stable/c/3ea5210db058347481c93849786982f874f7be2d'
  - url: 'https://git.kernel.org/stable/c/4e48168825818bf4a13c743582227d15f1d30d04'
  - url: 'https://git.kernel.org/stable/c/b40c74262f7e1e601221cebccdbdb2b392ff9976'
  - url: 'https://git.kernel.org/stable/c/bd63c7879eaa87f1958f7ee027813356fcd9ff11'
  - url: 'https://git.kernel.org/stable/c/93a0a846ec59a88e0c402878a15357a5ce430eb4'
  - url: 'https://git.kernel.org/stable/c/d211028bac1bd0fff0026bfa2a8328e5b78cd0e6'
tags:
  - cve.org
epss: 0.00176
epssPercentile: 0.06656
ingestedAt: '2026-10-16T19:46:24.360Z'
---

## Overview

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

s390/qeth: Check CAP_NET_ADMIN for private ioctls

Gate the SIOCDEVPRIVATE ioctl commands SIOC_QETH_ADP_SET_SNMP_CONTROL,
SIOC_QETH_GET_CARD_TYPE and SIOC_QETH_QUERY_OAT with CAP_NET_ADMIN
capable check to ensure unprivileged users cannot invoke them.

## Affected

- `Linux >= 18787eeebd7129ecf4960876d24f349682207783 < 8fb69547924bbb3d7c900a0d7d137a7234db3f5f`
- `Linux >= 18787eeebd7129ecf4960876d24f349682207783 < 3ea5210db058347481c93849786982f874f7be2d`
- `Linux >= 18787eeebd7129ecf4960876d24f349682207783 < 4e48168825818bf4a13c743582227d15f1d30d04`
- `Linux >= 18787eeebd7129ecf4960876d24f349682207783 < b40c74262f7e1e601221cebccdbdb2b392ff9976`
- `Linux >= 18787eeebd7129ecf4960876d24f349682207783 < bd63c7879eaa87f1958f7ee027813356fcd9ff11`
- `Linux >= 18787eeebd7129ecf4960876d24f349682207783 < 93a0a846ec59a88e0c402878a15357a5ce430eb4`
- `Linux >= 18787eeebd7129ecf4960876d24f349682207783 < d211028bac1bd0fff0026bfa2a8328e5b78cd0e6`
- `Linux 5.15`

## Remediation

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