{"api_version":"1","generated_at":"2026-11-03T11:17:27+00:00","cve":"CVE-2026-99070","urls":{"html":"https://cve.report/CVE-2026-99070","api":"https://cve.report/api/cve/CVE-2026-99070.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-99070","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-99070"},"summary":{"title":"ipv6: do not warn on route notification size race","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-23 13:17:30","updated_at":"2026-10-30 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99070","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 907eea486888cfe118c19759bbc4b8fca2e004df dac2b0328495971c7b417fd0143e53643343936e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 907eea486888cfe118c19759bbc4b8fca2e004df 24b2c95a046e15c9504a6d672b6b0b252952493f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 907eea486888cfe118c19759bbc4b8fca2e004df 8a3b935b6b6037eefb36bd27a60793a008358e8d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 907eea486888cfe118c19759bbc4b8fca2e004df 7b112bd43f1172fb152e848570a957467008a5ae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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00:05:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv6/route.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"dac2b0328495971c7b417fd0143e53643343936e","status":"affected","version":"907eea486888cfe118c19759bbc4b8fca2e004df","versionType":"git"},{"lessThan":"24b2c95a046e15c9504a6d672b6b0b252952493f","status":"affected","version":"907eea486888cfe118c19759bbc4b8fca2e004df","versionType":"git"},{"lessThan":"8a3b935b6b6037eefb36bd27a60793a008358e8d","status":"affected","version":"907eea486888cfe118c19759bbc4b8fca2e004df","versionType":"git"},{"lessThan":"7b112bd43f1172fb152e848570a957467008a5ae","status":"affected","version":"907eea486888cfe118c19759bbc4b8fca2e004df","versionType":"git"},{"lessThan":"4ac7d92a4698e34e614c254359665b9de1f65283","status":"affected","version":"907eea486888cfe118c19759bbc4b8fca2e004df","versionType":"git"},{"lessThan":"291fe0bafee78c95f9f2e7f579f17793fd5a1e5a","status":"affected","version":"907eea486888cfe118c19759bbc4b8fca2e004df","versionType":"git"},{"lessThan":"c97426ec649d99596d8969e1a052c16b14b7b485","status":"affected","version":"907eea486888cfe118c19759bbc4b8fca2e004df","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv6/route.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.12"},{"lessThan":"5.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.224","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.191","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.160","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.57","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.224","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.191","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.160","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.57","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.11","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"5.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-10-30T12:41:29.857Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/dac2b0328495971c7b417fd0143e53643343936e"},{"url":"https://git.kernel.org/stable/c/24b2c95a046e15c9504a6d672b6b0b252952493f"},{"url":"https://git.kernel.org/stable/c/8a3b935b6b6037eefb36bd27a60793a008358e8d"},{"url":"https://git.kernel.org/stable/c/7b112bd43f1172fb152e848570a957467008a5ae"},{"url":"https://git.kernel.org/stable/c/4ac7d92a4698e34e614c254359665b9de1f65283"},{"url":"https://git.kernel.org/stable/c/291fe0bafee78c95f9f2e7f579f17793fd5a1e5a"},{"url":"https://git.kernel.org/stable/c/c97426ec649d99596d8969e1a052c16b14b7b485"}],"title":"ipv6: do not warn on route notification size race","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-99070","datePublished":"2026-10-23T12:23:13.342Z","dateReserved":"2026-09-25T10:25:14.389Z","dateUpdated":"2026-10-30T12:41:29.857Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-23 13:17:30","lastModifiedDate":"2026-10-30 13:21:43","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"99070","Ordinal":"1","Title":"ipv6: do not warn on route notification size race","CVE":"CVE-2026-99070","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"99070","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"ipv6: do not warn on route notification size race"}]}}}