{"metadata": {"vulnerability": "CVE-2026-99040", "count": 33, "kinds": {"milestone": 8, "sighting": 1, "kev": 0, "other": 24}}, "data": [{"timestamp": "2026-09-25T10:25:14.387Z", "date_only": false, "value": "2026-09-25T10:25:14.387Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-99040", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-23T12:21:59.288Z", "date_only": false, "value": "2026-10-23T12:21:59.288Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99040", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-23T13:17:00Z", "date_only": false, "value": "2026-10-23T13:17:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-99040", "record": "UBUNTU-CVE-2026-99040", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-23T13:17:27Z", "date_only": false, "value": "2026-10-23T13:17:27Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-XFXP-JQFR-M4G5", "record": "GHSA-XFXP-JQFR-M4G5", "field": "database_specific.nvd_published_at", "linked_record": true}, {"timestamp": "2026-10-23T13:17:27.360Z", "date_only": false, "value": "2026-10-23T13:17:27.360", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-99040", "record": "FKIE_CVE-2026-99040", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-23T14:07:04.413Z", "date_only": false, "value": "2026-10-23T14:07:04.413617Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117490609237582871", "record": "CVE-2026-99040", "field": "creation_timestamp", "uuid": "219e9e71-0c74-405c-bd24-b336d59c8412", "content": "CVE-2026-99040 KEYS: Fix add_key() race with keyring restriction In the Linux kernel, the following vulnerability has been resolved:\nKEYS: Fix add_key() race with keyring restriction\n__key_create_or_update() snapshots keyring->restrict_link before takingthe destination keyring's semaphore.  keyring_restrict() installs arestriction while holding that semaphore.\nThis allows a writer to observe no restriction, wait for the keyringowner to install a reject-all restriction and return successfully, andthen link a key using the stale NULL snapshot.  The writer only needswrite permission on the destination keyring.\nMove the restrict_link read after __key_link_lock() and__key_link_begin().  The read and the subsequent restriction check arethen serialized with restriction installation by keyring->sem.\nThe race was reproduced on v7.2.8 in 19 executions where restrictioninstallation returned before the link completed.  All 19 linked the keydespite the reject-all restriction.  With this change, 312 executionsreached the same ordering and every add_key() call failed with -EPERM.\nThe issue was found by manual concurrency analysis assisted by AI-basedanalysis and independently verified with a QEMU reproducer and kernelinstrumentation.\nhttps://www.cve.org/CVERecord?id=CVE-2026-99040https://git.kernel.org/stable/c/305f1828b871dd46bf41addeb6f11d2c162dcb25https://git.kernel.org/stable/c/f99399b48e3edd6851fac34cd329bab9f1f33bafhttps://git.kernel.org/stable/c/11516a0c402a6c1fa52254aa70d8d65fb921e59ehttps://git.kernel.org/stable/c/da0b595d8e6e2dd798f6e34e09dc51a13b888514https://git.kernel.org/stable/c/dd3ea3fcba7c75493760cdbccd35f029597e8d5e#kernel #Linux#CVE_2026_99040#bot", "url": "https://infosec.exchange/users/cve/statuses/117490609237582871"}, {"timestamp": "2026-10-23T15:31:35Z", "date_only": false, "value": "2026-10-23T15:31:35Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-XFXP-JQFR-M4G5", "record": "GHSA-XFXP-JQFR-M4G5", 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