CVE-2025-38736: net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization
In the Linux kernel, the following vulnerability has been resolved:
net: usb: asixdevices: Fix PHY address mask in MDIO bus initialization
Syzbot reported shift-out-of-bounds exception on MDIO bus initialization.
The PHY address should be masked to 5 bits (0-31). Without this mask, invalid PHY addresses could be used, potentially causing issues with MDIO bus operations.
Fix this by masking the PHY address with 0x1f (31 decimal) to ensure it stays within the valid range.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-38736?
CVE-2025-38736 has been assigned a severity rating indicative of potential impacts on the Linux kernel's MDIO bus initialization.
What does CVE-2025-38736 affect?
CVE-2025-38736 affects the Linux kernel's handling of MDIO bus initialization related to ASIX devices.
How do I fix CVE-2025-38736?
To fix CVE-2025-38736, update your Linux kernel to the latest version that contains the patch addressing this vulnerability.
What are the symptoms of CVE-2025-38736?
The symptoms of CVE-2025-38736 may include shift-out-of-bounds exceptions during MDIO bus initialization.
Who reported CVE-2025-38736?
CVE-2025-38736 was reported by Syzbot, a tool for finding bugs in the Linux kernel.