Bug 2429124 (CVE-2025-71094)

Summary: CVE-2025-71094 kernel: net: usb: asix: validate PHY address before use
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2026-01-13 16:08:30 UTC 
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.
Comment 1 Jon Moroney 2026-01-13 17:27:39 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026011343-CVE-2025-71094-087b@gregkh/T