CVE-2025-38736
High
Description
In the Linux kernel, the following vulnerability has been resolved: net: usb: asix_devices: 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.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Linux Kernel
PublishedSep 5, 2025
First seenSep 5, 2025
How to fix
Update
- linux linux_kernel6.16, 6.16.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.15.11 ≤ v < 6.16, 6.16.2 ≤ v < 6.16.4, 6.12.43, 6.17 | 6.16, 6.16.4 |
| debian debian_linux | 11.0 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.