{"metadata": {"vulnerability": "CVE-2026-99171", "count": 33, "kinds": {"milestone": 10, "sighting": 1, "kev": 0, "other": 22}, "linked_omitted": 0}, "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-2026-99171", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-28T10:35:26.598Z", "date_only": false, "value": "2026-10-28T10:35:26.598Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99171", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-28T11:17:00Z", "date_only": false, "value": "2026-10-28T11:17:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-99171", "record": "UBUNTU-CVE-2026-99171", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"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-2RJ4-34VW-Q254", "record": "GHSA-2RJ4-34VW-Q254", "field": "database_specific.nvd_published_at", "linked_record": true}, {"timestamp": "2026-10-28T11:17:37.660Z", "date_only": false, "value": "2026-10-28T11:17:37.660", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-99171", "record": "FKIE_CVE-2026-99171", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-28T11:31:40.473Z", "date_only": false, "value": "2026-10-28T11:31:40.473767Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117518309783771229", "record": "CVE-2026-99171", "field": "creation_timestamp", "uuid": "1544eae5-29d2-411c-9b06-86b860e3d358", "content": "CVE-2026-99171 ntfs3: free the sbi after a grace period In the Linux kernel, the following vulnerability has been resolved:\nntfs3: free the sbi after a grace period\nIf the \"nocase\" mount option ntfs3 uses custom hash and dentry comparefunctions. Both access ntfs3 superblock private information in rcupathwalk. ntfs_put_super() and ntfs3_kill_sb() drop the info without anyrcu delay. A lookup that's still inside the filesystem when the lastreference to the mount is dropped causes a UAF. With a pathwalk held upin ntfs_d_hash() while the last reference to the mount goes away:\n  BUG: KASAN: slab-use-after-free in ntfs_nls_to_utf16+0x752/0x940  Read of size 8 at addr ff1100010453c850 by task walker/99  Call Trace:   <TASK>   ntfs_nls_to_utf16+0x752/0x940   ntfs_d_hash+0x22b/0x500   link_path_walk+0x11ad/0x1d30   path_lookupat+0x63/0xb00   filename_lookup+0x1f1/0x5b0   vfs_statx+0xd7/0x3b0  [...]  Allocated by task 95:   __kmalloc_cache_noprof+0x249/0x560   ntfs_init_fs_context+0x2db/0x5a0   alloc_fs_context+0x52e/0xc70  [...]  Freed by task 98:   kfree+0x1db/0x5b0   deactivate_locked_super+0x9c/0xf0   cleanup_mnt+0x9f/0x130   task_work_run+0x131/0x250\nThe bug is currently masked by the grace period in namespace_unlock()for umount(2). Keep the necessary information until the filesystemprivate info is freed and free it with an rcu delay.\nntfs3_free_sbi() now runs from an rcu callback and drops the upcasetable via ntfs_put_shared(). So switch s_shared_lock over tospin_lock_bh(). Otherwise the callback can deadlock against a taskholding the lock on the same cpu.\nhttps://www.cve.org/CVERecord?id=CVE-2026-99171https://git.kernel.org/stable/c/c8b1a4840467930e01f1a9374d991d7a8a2896c1https://git.kernel.org/stable/c/7abecef26a9be8f9de70659a3092250461a52072https://git.kernel.org/stable/c/c01b091b06412d3b1b53d8c2925f6de586c8a2fc#kernel #Linux#CVE_2026_99171#bot", "url": "https://infosec.exchange/users/cve/statuses/117518309783771229"}, {"timestamp": "2026-10-28T12:31:06Z", "date_only": false, "value": "2026-10-28T12:31:06Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-2RJ4-34VW-Q254", "record": "GHSA-2RJ4-34VW-Q254", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-28T23:00:00Z", "date_only": false, "value": "2026-10-28T23:00:00.000+00:00", "kind": "other", "label": "Advisory revision", "source": "csaf_certbund \u00b7 WID-SEC-W-2026-4224", "record": 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