{"id":"CVE-2025-40158","title":"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\nfro…","summary":"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\nfro…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 < 92803b826e40e49a5e8a6e208f4b4574e9d19426","Linux >= 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 < 0393f85c3241c19ba8550f04a812e7d19f6b3082","Linux >= 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 < 11709573cc4e48dc34c80fc7ab9ce5b159e29695","Linux 4.13"],"published":"2025-11-12","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:16.923","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-40158","references":[{"url":"https://git.kernel.org/stable/c/0393f85c3241c19ba8550f04a812e7d19f6b3082","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/11709573cc4e48dc34c80fc7ab9ce5b159e29695","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/92803b826e40e49a5e8a6e208f4b4574e9d19426","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00472,"epssPercentile":0.39263,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-16T20:00:29.008533Z"},"ingestedAt":"2026-10-15T11:00:41.716Z","slug":"CVE-2025-40158","body":"## Overview\n\nIn 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().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}