CVE-2025-38725
MEDIUMLinux Kernel 5.14-6.16.2 - Null Pointer Dereference in ax88772 MDIO Bus
Title source: llmDescription
In the Linux kernel, the following vulnerability has been resolved: net: usb: asix_devices: add phy_mask for ax88772 mdio bus Without setting phy_mask for ax88772 mdio bus, current driver may create at most 32 mdio phy devices with phy address range from 0x00 ~ 0x1f. DLink DUB-E100 H/W Ver B1 is such a device. However, only one main phy device will bind to net phy driver. This is creating issue during system suspend/resume since phy_polling_mode() in phy_state_machine() will directly deference member of phydev->drv for non-main phy devices. Then NULL pointer dereference issue will occur. Due to only external phy or internal phy is necessary, add phy_mask for ax88772 mdio bus to workarnoud the issue.
References (9)
Core 9
Core References
Third Party Advisory, Mailing List
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-032379.html
Scores
CVSS v3
5.5
EPSS
0.0002
EPSS Percentile
6.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
Status
published
Products (25)
debian/debian_linux
11.0
linux/Kernel
5.14.0 - 5.15.190linux
linux/Kernel
5.16.0 - 6.1.149linux
linux/Kernel
6.13.0 - 6.15.11linux
linux/Kernel
6.16.0 - 6.16.2linux
linux/Kernel
6.2.0 - 6.6.103linux
linux/Kernel
6.7.0 - 6.12.43linux
Linux/Linux
< 5.14
Linux/Linux
5.14
Linux/Linux
5.15.190 - 5.15.*
... and 15 more
Published
Sep 04, 2025
Tracked Since
Feb 18, 2026