{"cve":"CVE-2025-38736","nvd":{"published":"2025-09-05T18:15:42.953","modified":"2026-10-19T21:10:00.160","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: asix_devices: Fix PHY address mask in MDIO bus initialization\n\nSyzbot reported shift-out-of-bounds exception on MDIO bus initialization.\n\nThe PHY address should be masked to 5 bits (0-31). Without this\nmask, invalid PHY addresses could be used, potentially causing issues\nwith MDIO bus operations.\n\nFix this by masking the PHY address with 0x1f (31 decimal) to ensure\nit stays within the valid range.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/22042ffedd8c2c6db08ccdd6d4273068eddd3c5c","https://git.kernel.org/stable/c/24ef2f53c07f273bad99173e27ee88d44d135b1c","https://git.kernel.org/stable/c/523eab02fce458fa6d3c51de5bb055800986953e","https://git.kernel.org/stable/c/748da80831221ae24b4bc8d7ffb22acd5712a341","https://git.kernel.org/stable/c/8f141f2a4f2ef8ca865d5921574c3d6535e00a49"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-38736","score":0.00173,"percentile":0.06603,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}