Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.15.11, < 6.16 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/22042ffedd8c2c6db08ccdd6d4273068eddd3c5cPatch
- https://git.kernel.org/stable/c/24ef2f53c07f273bad99173e27ee88d44d135b1cPatch
- https://git.kernel.org/stable/c/523eab02fce458fa6d3c51de5bb055800986953ePatch
- https://git.kernel.org/stable/c/748da80831221ae24b4bc8d7ffb22acd5712a341Patch
- https://git.kernel.org/stable/c/8f141f2a4f2ef8ca865d5921574c3d6535e00a49Patch
- https://git.kernel.org/stable/c/fcb4ce9f729c1d08e53abf9d449340e24c3edee6Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
FAQ
What is CVE-2025-38736?
CVE-2025-38736 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 ...
How severe is CVE-2025-38736?
CVE-2025-38736 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-38736?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.