{"id":"CVE-2026-99070","summary":"ipv6: do not warn on route notification size race","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: do not warn on route notification size race\n\nfib6_info_hw_flags_set() sizes the skb with rt6_nlmsg_size() and later\nfills it with rt6_fill_node().  With nexthop compatibility mode enabled,\na concurrent replacement can grow the group between these independent\nsnapshots.  rt6_fill_node() can then legitimately return -EMSGSIZE, so\nthe warning does not prove a sizing bug.\n\nRemove the warning.  The existing error path still frees the skb and\nreports the error to listeners.","modified":"2026-11-01T02:38:08.043588048Z","published":"2026-10-23T12:23:13.342Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99070.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/24b2c95a046e15c9504a6d672b6b0b252952493f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/291fe0bafee78c95f9f2e7f579f17793fd5a1e5a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4ac7d92a4698e34e614c254359665b9de1f65283"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7b112bd43f1172fb152e848570a957467008a5ae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8a3b935b6b6037eefb36bd27a60793a008358e8d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c97426ec649d99596d8969e1a052c16b14b7b485"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dac2b0328495971c7b417fd0143e53643343936e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99070.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99070"},{"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":"907eea486888cfe118c19759bbc4b8fca2e004df"},{"fixed":"dac2b0328495971c7b417fd0143e53643343936e"},{"fixed":"24b2c95a046e15c9504a6d672b6b0b252952493f"},{"fixed":"8a3b935b6b6037eefb36bd27a60793a008358e8d"},{"fixed":"7b112bd43f1172fb152e848570a957467008a5ae"},{"fixed":"4ac7d92a4698e34e614c254359665b9de1f65283"},{"fixed":"291fe0bafee78c95f9f2e7f579f17793fd5a1e5a"},{"fixed":"c97426ec649d99596d8969e1a052c16b14b7b485"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-99070.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.12.0"},{"fixed":"5.15.224"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.191"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.160"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.113"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.57"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-99070.json"}}],"schema_version":"1.9.2"}