{"id":"CVE-2025-21765","summary":"ipv6: use RCU protection in ip6_default_advmss()","details":"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.","modified":"2026-03-31T17:29:53.103001Z","published":"2025-02-27T02:18:16.078Z","related":["ALSA-2025:20095","ALSA-2025:20518","SUSE-SU-2025:01919-1","SUSE-SU-2025:01951-1","SUSE-SU-2025:01967-1","SUSE-SU-2025:1177-1","SUSE-SU-2025:1178-1","SUSE-SU-2025:1180-1","SUSE-SU-2025:1293-1","SUSE-SU-2025:20190-1","SUSE-SU-2025:20192-1","SUSE-SU-2025:20260-1","SUSE-SU-2025:20270-1","SUSE-SU-2026:0474-1","SUSE-SU-2026:0475-1","SUSE-SU-2026:0495-1","SUSE-SU-2026:0496-1","SUSE-SU-2026:0617-1","SUSE-SU-2026:1131-1","USN-7521-2"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21765.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/28de355b63ad42309ed5a03ee7c436c90512265b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3c8ffcd248da34fc41e52a46e51505900115fc2a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4176a68b0db8fc74ac14fcd00ba8231371051dc2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/550ed693f47370502a71b85382e7f9e6417300b8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/713a40c892f40300d63691d9f85b2a23b48fe1e8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/78ad057472d8c76e0602402269222f9f9c698790"},{"type":"WEB","url":"https://git.kernel.org/stable/c/84212387caadb211cd9dadd6fd5563bd37dc1f5e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d02f30d220ef9511568a48dba8a9004c65f8d904"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21765.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21765"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5578689a4e3c04f2d43ea39736fd3fa396d80c6e"},{"fixed":"78ad057472d8c76e0602402269222f9f9c698790"},{"fixed":"d02f30d220ef9511568a48dba8a9004c65f8d904"},{"fixed":"28de355b63ad42309ed5a03ee7c436c90512265b"},{"fixed":"84212387caadb211cd9dadd6fd5563bd37dc1f5e"},{"fixed":"4176a68b0db8fc74ac14fcd00ba8231371051dc2"},{"fixed":"713a40c892f40300d63691d9f85b2a23b48fe1e8"},{"fixed":"550ed693f47370502a71b85382e7f9e6417300b8"},{"fixed":"3c8ffcd248da34fc41e52a46e51505900115fc2a"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21765.json"}}],"schema_version":"1.7.5"}