What’s Vulnerable › Vulnerabilities

CVE-2025-71094: net: usb: asix: validate PHY address before use

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-13 · updated 2026-10-19
• Weakness: CWE-20

Description

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 products

• Linux kernel: from 5.13.13 before 5.14; from 5.14.1 before 5.15.198; from 5.16 before 6.1.160; from 6.2 before 6.6.120; from 6.7 before 6.12.64; from 6.13 before 6.18.4 — fixed in 5.14, 5.15.198, 6.1.160, 6.12.64, 6.18.4, 6.6.120

How to fix

Upgrade to a fixed version: Linux kernel 5.14, 5.15.198, 6.1.160, 6.12.64. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/38722e69ee64dbb020028c93898d25d6f4c0e0b2
• https://git.kernel.org/stable/c/98a12c2547a44a5f03f35c108d2022cc652cbc4d
• https://git.kernel.org/stable/c/a1e077a3f76eea0dc671ed6792e7d543946227e8
• https://git.kernel.org/stable/c/bf8a0f3b787ca7c5889bfca12c60c483041fbee3
• https://git.kernel.org/stable/c/f5f4f30f3811d37e1aa48667c36add74e5a8d99f
• https://git.kernel.org/stable/c/fc96018f09f8d30586ca6582c5045a84eafef146

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