---
id: CVE-2025-71094
title: 'net: usb: asix: validate PHY address before use'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: usb: asix: validate PHY address before use

  The ASIX driver reads the PHY address from the USB device via
  asix_read_phy_addr(). A malicious or faulty device can re…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b <
    fc96018f09f8d30586ca6582c5045a84eafef146
  - >-
    Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b <
    f5f4f30f3811d37e1aa48667c36add74e5a8d99f
  - >-
    Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b <
    38722e69ee64dbb020028c93898d25d6f4c0e0b2
  - >-
    Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b <
    98a12c2547a44a5f03f35c108d2022cc652cbc4d
  - >-
    Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b <
    bf8a0f3b787ca7c5889bfca12c60c483041fbee3
  - >-
    Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b <
    a1e077a3f76eea0dc671ed6792e7d543946227e8
  - Linux 4e4f3cb41d687bd64cd03358862b23c84d82329e
  - Linux >= 5.13.13 < 5.14
  - Linux 5.14
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:42:29.490248Z'
published: '2026-01-13'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:15:12.474Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-71094'
references:
  - url: 'https://git.kernel.org/stable/c/fc96018f09f8d30586ca6582c5045a84eafef146'
  - url: 'https://git.kernel.org/stable/c/f5f4f30f3811d37e1aa48667c36add74e5a8d99f'
  - url: 'https://git.kernel.org/stable/c/38722e69ee64dbb020028c93898d25d6f4c0e0b2'
  - url: 'https://git.kernel.org/stable/c/98a12c2547a44a5f03f35c108d2022cc652cbc4d'
  - url: 'https://git.kernel.org/stable/c/bf8a0f3b787ca7c5889bfca12c60c483041fbee3'
  - url: 'https://git.kernel.org/stable/c/a1e077a3f76eea0dc671ed6792e7d543946227e8'
tags:
  - cve.org
epss: 0.00137
epssPercentile: 0.02763
ingestedAt: '2026-10-19T18:35:50.136Z'
---

## Overview

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

net: usb: asix: validate PHY address before use

The ASIX driver reads the PHY address from the USB device via
asix_read_phy_addr(). A malicious or faulty device can return an
invalid address (>= PHY_MAX_ADDR), which causes a warning in
mdiobus_get_phy():

  addr 207 out of range
  WARNING: drivers/net/phy/mdio_bus.c:76

Validate the PHY address in asix_read_phy_addr() and remove the
now-redundant check in ax88172a.c.

## Affected

- `Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b < fc96018f09f8d30586ca6582c5045a84eafef146`
- `Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b < f5f4f30f3811d37e1aa48667c36add74e5a8d99f`
- `Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b < 38722e69ee64dbb020028c93898d25d6f4c0e0b2`
- `Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b < 98a12c2547a44a5f03f35c108d2022cc652cbc4d`
- `Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b < bf8a0f3b787ca7c5889bfca12c60c483041fbee3`
- `Linux >= 7e88b11a862afe59ee0c365123ea5fb96a26cb3b < a1e077a3f76eea0dc671ed6792e7d543946227e8`
- `Linux 4e4f3cb41d687bd64cd03358862b23c84d82329e`
- `Linux >= 5.13.13 < 5.14`
- `Linux 5.14`

## Remediation

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