{"metadata": {"vulnerability": "CVE-2026-99121", "count": 20, "kinds": {"milestone": 7, "sighting": 1, "kev": 0, "other": 12}}, "data": [{"timestamp": "2026-09-25T10:25:14.393Z", "date_only": false, "value": "2026-09-25T10:25:14.393Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-99121", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-28T00:00:00Z", "date_only": false, "value": "2026-10-28T00:00:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-99121", "record": "UBUNTU-CVE-2026-99121", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-28T10:34:37.082Z", "date_only": false, "value": "2026-10-28T10:34:37.082Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99121", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-28T10:58:00.929Z", "date_only": false, "value": "2026-10-28T10:58:00.929772Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117518177423572437", "record": "CVE-2026-99121", "field": "creation_timestamp", "uuid": "dcd50d15-89d6-47bb-bf7e-2a28419fd368", "content": "CVE-2026-99121 ipv4: avoid divide by zero in fib_rebalance In the Linux kernel, the following vulnerability has been resolved:\nipv4: avoid divide by zero in fib_rebalance\nfib_rebalance() computes the total eligible nexthop weight in one passand programs upper bounds in a second pass. A concurrent change toignore_routes_with_linkdown can make the first pass return zero whilethe second pass sees an eligible nexthop, resulting in division by zero.\nIf the first pass reports a zero total, set each nexthop upper bound to-1 and skip the division. This matches the IPv6 fix in commitd2c26c2911dd (\"ipv6: avoid divide by zero in rt6_multipath_rebalance\")and preserves the lock-free rebalance path.\nhttps://www.cve.org/CVERecord?id=CVE-2026-99121https://git.kernel.org/stable/c/5dac5c7ba8f5f3fb4bf29f2a2c3cb552f5b83c8fhttps://git.kernel.org/stable/c/d5520e815c4b1427104ce1428ee23821f2aa824dhttps://git.kernel.org/stable/c/5046d2880fec7d49ebed2fd2866747ee1d06ad71#kernel #Linux#CVE_2026_99121#bot", "url": "https://infosec.exchange/users/cve/statuses/117518177423572437"}, {"timestamp": "2026-10-28T11:17:31Z", "date_only": false, "value": "2026-10-28T11:17:31Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-6Q9R-CQW9-Q9Q4", "record": "GHSA-6Q9R-CQW9-Q9Q4", "field": "database_specific.nvd_published_at", "linked_record": true}, {"timestamp": "2026-10-28T11:17:31.733Z", "date_only": false, "value": "2026-10-28T11:17:31.733", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 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