{"metadata": {"vulnerability": "cve-2026-98978", "count": 17, "kinds": {"milestone": 6, "sighting": 1, "kev": 0, "other": 10}}, "data": [{"timestamp": "2026-09-25T10:25:14.383Z", "date_only": false, "value": "2026-09-25T10:25:14.383Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "cve-2026-98978", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-23T12:19:51.428Z", "date_only": false, "value": "2026-10-23T12:19:51.428Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "cve-2026-98978", "field": "cveMetadata.datePublished"}, {"timestamp": "2026-10-23T13:17:19Z", "date_only": false, "value": "2026-10-23T13:17:19Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-73PW-3QVG-VXHF", "record": "GHSA-73PW-3QVG-VXHF", "field": "database_specific.nvd_published_at"}, {"timestamp": "2026-10-23T13:17:19.517Z", "date_only": false, "value": "2026-10-23T13:17:19.517", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-98978", "record": "FKIE_CVE-2026-98978", "field": "published"}, {"timestamp": "2026-10-23T13:25:26.425Z", "date_only": false, "value": "2026-10-23T13:25:26.425686Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117490445230008936", "record": "CVE-2026-98978", "field": "creation_timestamp", "uuid": "611acbf0-6de6-4e67-a55d-4d8c9dd6c236", "content": "CVE-2026-98978 namespace: never expire a locked mount In the Linux kernel, the following vulnerability has been resolved:\nnamespace: never expire a locked mount\nLocked mounts are special. They protect the underlying files anddirectories from being revealed. do_umount() refuses to unmount lockedmounts but shrink_submounts() doesn't.\nA shrinkable mount can become locked once the owner of a user namespaceputs it beneath a locked mount with MOVE_MOUNT_BENEATH. The lockedproperty now moves to the mount at the bottom making it possible tounmount the top mount.\nSo umount() of an unlocked ancestor now expires the bottom mount firstand the covered directory is revealed:\n  move_mount(c -> x/hidden, MOVE_MOUNT_BENEATH) = 0  the cover after the lock moved:  umount2(x/hidden) = 0  the holder of the lock:          umount2(x/hidden) = EINVAL  the root of the copy, busy:      umount2(x) = EBUSY  reads x/hidden/secret: \"covered-by-root\"\nSo leave a locked mount alone as it dies together with its parent. Aplain umount() of an unlocked mount with a locked one below it is EBUSYfrom now on. It's the same for any other locked child. A lazy umountstill takes the whole tree.\nmark_mounts_for_expiry() never sees a locked mount. lock_mnt_tree()leaves a mount on an expiry list alone and nothing else puts a lockedone on such a list. Add an assert for this.\nhttps://www.cve.org/CVERecord?id=CVE-2026-98978https://git.kernel.org/stable/c/6b8dc3713a76346d212abab46cbfc8d7070f534chttps://git.kernel.org/stable/c/d23265a12e4991ce7aedce670c0b6b598cadb644https://git.kernel.org/stable/c/f78ddcc872248c7aa1d7e904928441a0be4c6d5d#kernel #Linux#CVE_2026_98978#bot", "url": "https://infosec.exchange/users/cve/statuses/117490445230008936"}, {"timestamp": "2026-10-23T15:31:33Z", "date_only": false, "value": "2026-10-23T15:31:33Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-73PW-3QVG-VXHF", "record": "GHSA-73PW-3QVG-VXHF", "field": "published"}, {"timestamp": "2026-10-24T01:10:41Z", "date_only": false, "value": "2026-10-24T01:10:41.000Z", "kind": "other", "label": "Advisory revision", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-98978", "record": "MSRC_CVE-2026-98978", "field": "document.tracking.revision_history.0.date"}, {"timestamp": "2026-10-24T01:10:41Z", "date_only": false, "value": "2026-10-24T01:10:41.000Z", "kind": "milestone", "label": "Published", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-98978", "record": "MSRC_CVE-2026-98978", "field": "document.tracking.initial_release_date"}, {"timestamp": "2026-10-24T14:09:47.444Z", "date_only": false, "value": "2026-10-24T14:09:47.444Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "cve-2026-98978", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-24T14:09:47.444Z", "date_only": false, "value": "2026-10-24T14:09:47.444Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / Linux", "record": "cve-2026-98978", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-24T14:16:50.377Z", "date_only": false, "value": "2026-10-24T14:16:50.377", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-98978", "record": "FKIE_CVE-2026-98978", "field": "lastModified"}, {"timestamp": "2026-10-24T15:32:48Z", "date_only": false, "value": "2026-10-24T15:32:48Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-73PW-3QVG-VXHF", "record": "GHSA-73PW-3QVG-VXHF", "field": "modified"}, {"timestamp": "2026-10-25T01:02:42Z", "date_only": false, "value": "2026-10-25T01:02:42.000Z", "kind": "other", "label": "Advisory revision", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-98978", "record": "MSRC_CVE-2026-98978", "field": "document.tracking.revision_history.1.date"}, {"timestamp": "2026-10-25T01:02:42Z", "date_only": false, "value": "2026-10-25T01:02:42.000Z", "kind": "other", "label": "Updated", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-98978", "record": "MSRC_CVE-2026-98978", "field": "document.tracking.current_release_date"}, {"timestamp": "2026-10-25T07:01:02.632Z", "date_only": false, "value": "2026-10-25T07:01:02.632Z", "kind": "other", "label": "Document generated", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-98978", "record": "MSRC_CVE-2026-98978", "field": "document.tracking.generator.date"}, {"timestamp": "2026-10-26T00:00:00Z", "date_only": false, "value": "2026-10-26T00:00:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-98978", "record": "UBUNTU-CVE-2026-98978", "field": "published"}, {"timestamp": "2026-10-27T22:30:46Z", "date_only": false, "value": "2026-10-27T22:30:46Z", "kind": "other", "label": "Updated", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-98978", "record": "UBUNTU-CVE-2026-98978", "field": "modified"}]}