---
id: CVE-2025-71112
title: 'net: hns3: add VLAN id validation before using'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: hns3: add VLAN id validation before using

  Currently, the VLAN id may be used without validation when
  receive a VLAN configuration mailbox from VF. The length of
  v…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 <
    46c7d9fe8dd869ea5de666aba8c1ec1061ca44a8
  - >-
    Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 <
    42c91dfa772c57de141e5a55a187ac760c0fd7e1
  - >-
    Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 <
    00e56a7706e10b3d00a258d81fcb85a7e96372d6
  - >-
    Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 <
    b7b4f3bf118f51b67691a55b464f04452e5dc6fc
  - >-
    Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 <
    95cca255a7a5ad782639ff0298c2a486707d1046
  - >-
    Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 <
    91a51d01be5c9f82c12c2921ca5cceaa31b67128
  - >-
    Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 <
    6ef935e65902bfed53980ad2754b06a284ea8ac1
  - Linux 5.3
published: '2026-01-14'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T08:43:54.906Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-71112'
references:
  - url: 'https://git.kernel.org/stable/c/46c7d9fe8dd869ea5de666aba8c1ec1061ca44a8'
  - url: 'https://git.kernel.org/stable/c/42c91dfa772c57de141e5a55a187ac760c0fd7e1'
  - url: 'https://git.kernel.org/stable/c/00e56a7706e10b3d00a258d81fcb85a7e96372d6'
  - url: 'https://git.kernel.org/stable/c/b7b4f3bf118f51b67691a55b464f04452e5dc6fc'
  - url: 'https://git.kernel.org/stable/c/95cca255a7a5ad782639ff0298c2a486707d1046'
  - url: 'https://git.kernel.org/stable/c/91a51d01be5c9f82c12c2921ca5cceaa31b67128'
  - url: 'https://git.kernel.org/stable/c/6ef935e65902bfed53980ad2754b06a284ea8ac1'
tags:
  - cve.org
epss: 0.00151
epssPercentile: 0.03581
ingestedAt: '2026-09-08T15:33:26.995Z'
---

## Overview

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

net: hns3: add VLAN id validation before using

Currently, the VLAN id may be used without validation when
receive a VLAN configuration mailbox from VF. The length of
vlan_del_fail_bmap is BITS_TO_LONGS(VLAN_N_VID). It may cause
out-of-bounds memory access once the VLAN id is bigger than
or equal to VLAN_N_VID.

Therefore, VLAN id needs to be checked to ensure it is within
the range of VLAN_N_VID.

## Affected

- `Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 < 46c7d9fe8dd869ea5de666aba8c1ec1061ca44a8`
- `Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 < 42c91dfa772c57de141e5a55a187ac760c0fd7e1`
- `Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 < 00e56a7706e10b3d00a258d81fcb85a7e96372d6`
- `Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 < b7b4f3bf118f51b67691a55b464f04452e5dc6fc`
- `Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 < 95cca255a7a5ad782639ff0298c2a486707d1046`
- `Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 < 91a51d01be5c9f82c12c2921ca5cceaa31b67128`
- `Linux >= fe4144d47eef8453459c53a34e9d5940a3e6c219 < 6ef935e65902bfed53980ad2754b06a284ea8ac1`
- `Linux 5.3`

## Remediation

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