{"metadata": {"vulnerability": "CVE-2026-99093", "count": 14, "kinds": {"milestone": 6, "sighting": 1, "kev": 0, "other": 7}}, "data": [{"timestamp": "2026-09-25T10:25:14.390Z", "date_only": false, "value": "2026-09-25T10:25:14.390Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-99093", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-26T14:52:01.450Z", "date_only": false, "value": "2026-10-26T14:52:01.450Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99093", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-26T14:52:01.450Z", "date_only": false, "value": "2026-10-26T14:52:01.450Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-99093", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-26T14:52:01.450Z", "date_only": false, "value": "2026-10-26T14:52:01.450Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / Linux", "record": "CVE-2026-99093", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-26T15:16:00Z", "date_only": false, "value": "2026-10-26T15:16:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-99093", "record": "UBUNTU-CVE-2026-99093", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-26T15:16:48Z", "date_only": false, "value": "2026-10-26T15:16:48Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-J2HW-F9FX-VXWR", "record": "GHSA-J2HW-F9FX-VXWR", "field": "database_specific.nvd_published_at"}, {"timestamp": "2026-10-26T15:16:48.253Z", "date_only": false, "value": "2026-10-26T15:16:48.253", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-99093", "record": "FKIE_CVE-2026-99093", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-26T15:16:48.253Z", "date_only": false, "value": "2026-10-26T15:16:48.253", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-99093", "record": "FKIE_CVE-2026-99093", "field": "lastModified"}, {"timestamp": "2026-10-26T15:23:02.986Z", "date_only": false, "value": "2026-10-26T15:23:02.986353Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117507894962382972", "record": "CVE-2026-99093", "field": "creation_timestamp", "uuid": "f809e38b-99c4-45ff-a900-110e676a2c63", "content": "CVE-2026-99093 mm: don't schedule deferred kernel page table freeing while booting In the Linux kernel, the following vulnerability has been resolved:\nmm: don't schedule deferred kernel page table freeing while booting\nBooting with a boot-time function tracer and a filter, for example\n  ftrace=function ftrace_filter=pud_free_pmd_page\npanics on 7.3-rc4 as soon as the tracer starts:\n  [   23.531178] Starting tracer 'function'  [   23.675800] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN NOPTI  [   23.819917] KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]  [   23.964025] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 7.3.0-rc4-fe2ec83746e5-with-fixes-v2+ #195 PREEMPT(undef)  [   24.252248] RIP: 0010:__queue_work+0xab/0xf00  [   25.981629] Call Trace:  [   26.125727]  <TASK>  [   26.413912]  ? pagetable_free_kernel+0x20/0x120  [   26.990283]  queue_work_on+0x97/0xf0  [   27.134382]  __cpa_collapse_large_pages+0x501/0x6f0  [   27.566662]  cpa_flush+0x394/0x620  [   27.998953]  change_page_attr_set_clr+0x321/0x4a0  [   29.151729]  set_memory_rox+0xa2/0xf0  [   29.584018]  create_trampoline+0x431/0x6f0  ...  [   44.343347] Kernel panic - not syncing: Attempted to kill the idle task!\nThe boot-time tracer is started from early_trace_init(), which runsbefore workqueue_init_early().  Making its trampoline read-only splits alarge page, and CPA collapses it again right away.  The split table hasbeen a kernel page table since commit 9e4a3ec3411b(\"x86/mm/pat: Allocate split page tables as kernel page tables\"), so thecollapse frees it through pagetable_free_kernel(), which queues work onsystem_percpu_wq - still NULL at that point.  That commit is correct initself; it only lets CPA reach pagetable_free_kernel() before theworkqueue that function relies on exists.\nKeep putting the table on the list, but don't schedule the work whilethe system is still booting.  A core_initcall schedules it once to freewhatever was queued by then.\nhttps://www.cve.org/CVERecord?id=CVE-2026-99093https://git.kernel.org/stable/c/7a25ca170c12a9328f6fcf4410713beb516b01c0https://git.kernel.org/stable/c/df6c704a08bc0925d5db047b0a6221f962bda4d9https://git.kernel.org/stable/c/2fb552b0bee70c24c092720028ab4620f5eb2646#kernel #Linux#CVE_2026_99093#bot", "url": "https://infosec.exchange/users/cve/statuses/117507894962382972"}, {"timestamp": "2026-10-26T15:34:50Z", "date_only": false, "value": "2026-10-26T15:34:50Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-J2HW-F9FX-VXWR", "record": "GHSA-J2HW-F9FX-VXWR", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-26T15:34:50Z", "date_only": false, "value": "2026-10-26T15:34:50Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-J2HW-F9FX-VXWR", "record": "GHSA-J2HW-F9FX-VXWR", "field": "modified"}, {"timestamp": "2026-10-29T06:07:35.868Z", "date_only": false, "value": "2026-10-29T06:07:35.868705Z", "kind": "milestone", "label": "Published", "source": "osv_bellsoft \u00b7 BELL-CVE-2026-99093", "record": "BELL-CVE-2026-99093", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-29T06:34:53.491Z", "date_only": false, "value": "2026-10-29T06:34:53.491800Z", "kind": "other", "label": "Updated", "source": "osv_bellsoft \u00b7 BELL-CVE-2026-99093", "record": "BELL-CVE-2026-99093", "field": "modified"}, {"timestamp": "2026-10-30T00:14:43Z", "date_only": false, "value": "2026-10-30T00:14:43Z", "kind": "other", "label": "Updated", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-99093", "record": "UBUNTU-CVE-2026-99093", "field": "modified"}], "metrics": {"as_of": "2026-10-31T11:07:11.844Z", "anchors": {"origin": {"timestamp": "2026-10-26T14:52:01.450Z", "date_only": false, "value": "2026-10-26T14:52:01.450Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99093", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "discovery": null, "report": null, "acknowledgement": null, "disclosure": {"timestamp": "2026-10-26T14:52:01.450Z", "date_only": false, "value": "2026-10-26T14:52:01.450Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99093", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "exploit_publication": null, "exploitation": null, "patch": null}, "vendor_response_time": {"available": false, "missing": ["start", "end"]}, "time_to_exploit": {"available": false, "missing": ["end"]}, "disclosure_to_exploit": {"available": false, "missing": ["end"]}, "disclosure_to_exploit_publication": {"available": false, "missing": ["end"]}, "time_to_patch": {"available": false, "missing": ["start", "end"]}, "total_time_to_patch": {"available": false, "missing": ["start", "end"]}, "disclosure_to_patch": {"available": false, "missing": ["end"]}, "time_unpatched": {"available": true, "seconds": 418510.39468, "hours": 116.25288741111112, "days": 4.843870308796297, "min_seconds": 418510.39468, "max_seconds": 418510.39468, "approximate": false, "ongoing": true, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2026-10-26T14:52:01.450Z", "date_only": false, "value": "2026-10-26T14:52:01.450Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99093", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "end": {"timestamp": "2026-10-31T11:07:11.844Z", "date_only": false, "label": "As of", "source": "Calculation clock"}}, "exploitation_to_patch": {"available": false, "missing": ["start"]}, "exploit_publication_to_patch": {"available": false, "missing": ["start"]}}}