{"cve":"CVE-2025-40239","nvd":{"published":"2025-12-04T16:16:16.963","modified":"2026-10-19T19:10:00.130","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phy: micrel: always set shared->phydev for LAN8814\n\nCurrently, during the LAN8814 PTP probe shared->phydev is only set if PTP\nclock gets actually set, otherwise the function will return before setting\nit.\n\nThis is an issue as shared->phydev is unconditionally being used when IRQ\nis being handled, especially in lan8814_gpio_process_cap and since it was\nnot set it will cause a NULL pointer exception and crash the kernel.\n\nSo, simply always set shared->phydev to avoid the NULL pointer exception.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/399d10934740ae8cdaa4e3245f7c5f6c332da844","https://git.kernel.org/stable/c/b093b06826b836c2824858669db080c190c04715","https://git.kernel.org/stable/c/da1ef8e9eb5d4a12bec32d11636e521e7d529b9e"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:16:40.427100871+00:00"},"epss":{"cve":"CVE-2025-40239","score":0.00199,"percentile":0.09586,"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."]}