{"metadata": {"vulnerability": "CVE-2026-99172", "count": 20, "kinds": {"milestone": 7, "sighting": 1, "kev": 0, "other": 12}}, "data": [{"timestamp": "2026-09-25T10:25:14.399Z", "date_only": false, "value": "2026-09-25T10:25:14.399Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-99172", "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-2026-99172", "record": "UBUNTU-CVE-2026-99172", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-28T10:35:27.245Z", "date_only": false, "value": "2026-10-28T10:35:27.245Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99172", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-28T10:35:27.245Z", "date_only": false, "value": "2026-10-28T10:35:27.245Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-99172", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-28T10:35:27.245Z", "date_only": false, "value": "2026-10-28T10:35:27.245Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / Linux", "record": "CVE-2026-99172", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-28T11:17:37Z", "date_only": false, "value": "2026-10-28T11:17:37Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-C64W-44GC-4H7W", "record": "GHSA-C64W-44GC-4H7W", "field": "database_specific.nvd_published_at", "linked_record": true}, {"timestamp": "2026-10-28T11:17:37.790Z", "date_only": false, "value": "2026-10-28T11:17:37.790", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-99172", "record": "FKIE_CVE-2026-99172", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-28T11:17:37.790Z", "date_only": false, "value": "2026-10-28T11:17:37.790", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-99172", "record": "FKIE_CVE-2026-99172", "field": "lastModified", "linked_record": true}, {"timestamp": "2026-10-28T11:32:21.065Z", "date_only": false, "value": "2026-10-28T11:32:21.065058Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117518312446244226", "record": "CVE-2026-99172", "field": "creation_timestamp", "uuid": "585a7851-2d45-4e04-8228-98515d7a3a86", "content": "CVE-2026-99172 ipc: drop the mqueue mount with kern_unmount() on setup failure In the Linux kernel, the following vulnerability has been resolved:\nipc: drop the mqueue mount with kern_unmount() on setup failure\nmq_init_ns() creates the mqueue mount with fc_mount_longterm(), so its->mnt_ns is MNT_NS_INTERNAL. When setting up the mqueue or ipc sysctlsor msg_init_ns() fails afterwards, create_ipc_ns() drops it with a plainmntput(). With ->mnt_ns set that takes the fast path ofmntput_no_expire(). The count drops to zero and nothing ever kills themount, so the mount and the mqueue superblock are leaked.\nCommit dc55e35f9e81 (\"ipc: Store mqueue sysctls in the ipc namespace\")added the first failure path after mq_init_ns() and never dropped themount. Commit 7229d74e5e8c (\"ipc: create_ipc_ns: drop mqueue mount onsysctl setup failure\") tried to fix that with a mntput() but thatdoesn't help for a long-term mount.\nUse kern_unmount(). free_ipc() open-codes the same thing for a namespacethat made it.\nhttps://www.cve.org/CVERecord?id=CVE-2026-99172https://git.kernel.org/stable/c/c0620b648321fff654173d238d4a85298ea16d05https://git.kernel.org/stable/c/f0e48172a59e517e613b73f73cc35f24fd123aeb#kernel #Linux#CVE_2026_99172#bot", "url": "https://infosec.exchange/users/cve/statuses/117518312446244226"}, {"timestamp": "2026-10-28T12:31:06Z", "date_only": false, "value": "2026-10-28T12:31:06Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-C64W-44GC-4H7W", "record": "GHSA-C64W-44GC-4H7W", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-28T12:31:06Z", "date_only": false, "value": "2026-10-28T12:31:06Z", "kind": "other", "label": 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