{"cve":"CVE-2025-21765","nvd":{"published":"2025-02-27T03:15:17.173","modified":"2026-10-15T02:17:34.137","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: use RCU protection in ip6_default_advmss()\n\nip6_default_advmss() needs rcu protection to make\nsure the net structure it reads does not disappear.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/28de355b63ad42309ed5a03ee7c436c90512265b","https://git.kernel.org/stable/c/3c8ffcd248da34fc41e52a46e51505900115fc2a","https://git.kernel.org/stable/c/4176a68b0db8fc74ac14fcd00ba8231371051dc2","https://git.kernel.org/stable/c/550ed693f47370502a71b85382e7f9e6417300b8","https://git.kernel.org/stable/c/713a40c892f40300d63691d9f85b2a23b48fe1e8"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2025-21765","score":0.00613,"percentile":0.49053,"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."]}