{"cve":"CVE-2025-40158","nvd":{"published":"2025-11-12T11:15:45.897","modified":"2026-10-21T13:18:19.343","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: use RCU in ip6_output()\n\nUse RCU in ip6_output() in order to use dst_dev_rcu() to prevent\npossible UAF.\n\nWe can remove rcu_read_lock()/rcu_read_unlock() pairs\nfrom ip6_finish_output2().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":[],"references":["https://git.kernel.org/stable/c/0393f85c3241c19ba8550f04a812e7d19f6b3082","https://git.kernel.org/stable/c/11709573cc4e48dc34c80fc7ab9ce5b159e29695","https://git.kernel.org/stable/c/423895685f367b5a0a956bd14b02df0192bded4c","https://git.kernel.org/stable/c/92803b826e40e49a5e8a6e208f4b4574e9d19426"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2025-40158","score":0.00555,"percentile":0.46014,"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."]}