{"metadata": {"vulnerability": "CVE-2026-99082", "count": 23, "kinds": {"milestone": 7, "sighting": 2, "kev": 0, "other": 14}}, "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-2026-99082", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-23T12:45:00.798Z", "date_only": false, "value": "2026-10-23T12:45:00.798Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99082", "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-2026-99082", "record": "UBUNTU-CVE-2026-99082", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-23T13:17:32Z", "date_only": false, "value": "2026-10-23T13:17:32Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-58R9-CH9W-PX7W", "record": "GHSA-58R9-CH9W-PX7W", "field": "database_specific.nvd_published_at", "linked_record": true}, {"timestamp": "2026-10-23T13:17:32.440Z", "date_only": false, "value": "2026-10-23T13:17:32.440", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-99082", "record": "FKIE_CVE-2026-99082", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-23T14:37:21.932Z", "date_only": false, "value": "2026-10-23T14:37:21.932125Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117490728211800105", "record": "CVE-2026-99082", "field": "creation_timestamp", "uuid": "9a23cafe-71f0-4fd3-8fa5-520b7268425d", "content": "CVE-2026-99082 KVM: x86: Use active memslots for the per-vCPU MMIO cache In the Linux kernel, the following vulnerability has been resolved:\nKVM: x86: Use active memslots for the per-vCPU MMIO cache\nKVM tags the per-vCPU MMIO cache with a memslot generation so that amemslot update invalidates cached MMIO information.  Both the fill andvalidation paths use kvm_memslots(), which unconditionally selects addressspace 0, even when the vCPU is running in SMM and using address space 1.\nCommit 56f17dd3fbc4 (\"kvm: x86: fix stale mmio cache bug\") added thememslot generation to the cache key so that a memslot update could notleave a stale entry valid.  When commit 699023e23965 (\"KVM: x86: add SMMto the MMU role, support SMRAM address space\") added the SMM address space,these helpers were not converted to use the active memslots.\nConsequently, an update to the SMM memslots can leave an entry from the oldSMM address space apparently valid after the vCPU returns to the normaladdress space.  A guest can then cause an access to valid RAM at the sameGFN to be returned to userspace as KVM_EXIT_MMIO.\nCompleting that exit through the VMM's RAM address space writes the backingpage without going through KVM's write-tracking path.  If the page backs anested EPT table, KVM can continue using shadow translations derived fromthe old contents.  The WARN_ON_ONCE() in kvm_mmu_write_protect_fault()catches this invalid cache and memslot combination.\nUse the vCPU's active memslots when caching and validating the entry.Memslot generations are unique across address spaces, so the generationalso distinguishes the normal and SMM views.  This matches the MMIO SPTEcache, which already uses kvm_vcpu_memslots().\nOn an unpatched current-mainline kernel, a regression test that fills thecache in SMM and updates only the SMM memslots fails the intended RAM writeand triggers the kvm_mmu_write_protect_fault() warning.  With this change,the same test completes the RAM write without a warning.  The x86/smm_test,set_memory_region_test, and memslot_modification_stress_test selftests alsopass.\nhttps://www.cve.org/CVERecord?id=CVE-2026-99082https://git.kernel.org/stable/c/a63f79d9da9468952396af73e1e53330845cf876https://git.kernel.org/stable/c/7fd4e64f4bbc8c35ae8f0d2a1fb5b77a76d5b4fdhttps://git.kernel.org/stable/c/2566780c684c9c21241d409d790087c73070f312https://git.kernel.org/stable/c/e792a9ace39d2812a5b342a1987186c7bc653204https://git.kernel.org/stable/c/b3e6212dea2e4328a841ceb37f377583176dc735#kernel #Linux#CVE_2026_99082#bot", "url": "https://infosec.exchange/users/cve/statuses/117490728211800105"}, {"timestamp": "2026-10-23T15:31:37Z", "date_only": false, "value": "2026-10-23T15:31:37Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-58R9-CH9W-PX7W", "record": "GHSA-58R9-CH9W-PX7W", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-24T23:48:47.138Z", "date_only": false, "value": "2026-10-24T23:48:47.138272Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mynuyh542x25", "record": "CVE-2026-99082", "field": "creation_timestamp", "uuid": "133a66f3-5063-4c63-bc40-b7f9f874ec2d", "content": "\ud83d\udfe0 CVE-2026-99082 - High (8.8)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: Use active memslot...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-99082/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "url": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mynuyh542x25"}, {"timestamp": "2026-10-25T01:05:25Z", "date_only": false, "value": "2026-10-25T01:05:25.000Z", "kind": "other", "label": "Advisory revision", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-99082", "record": "MSRC_CVE-2026-99082", "field": "document.tracking.revision_history.0.date", "linked_record": true}, {"timestamp": "2026-10-25T01:05:25Z", "date_only": false, "value": "2026-10-25T01:05:25.000Z", "kind": "other", "label": "None available", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-99082", "record": "MSRC_CVE-2026-99082", "field": "vulnerabilities.0.remediations.0.date", "linked_record": true}, {"timestamp": "2026-10-25T01:05:25Z", "date_only": false, "value": "2026-10-25T01:05:25.000Z", "kind": "milestone", "label": "Published", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-99082", "record": "MSRC_CVE-2026-99082", "field": "document.tracking.initial_release_date", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-25T01:06:53Z", "date_only": false, "value": "2026-10-25T01:06:53.000Z", "kind": "other", "label": "Advisory revision", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-99082", "record": "MSRC_CVE-2026-99082", "field": "document.tracking.revision_history.1.date", "linked_record": true}, {"timestamp": "2026-10-26T14:49:16Z", "date_only": false, "value": "2026-10-26T14:49:16.000Z", "kind": "other", "label": "Advisory revision", "source": "csaf_microsoft \u00b7 MSRC_CVE-2026-99082", "record": "MSRC_CVE-2026-99082", "field": "document.tracking.revision_history.2.date", "linked_record": true}, {"timestamp": "2026-10-28T06:07:59.644Z", "date_only": false, "value": "2026-10-28T06:07:59.644040Z", "kind": "milestone", "label": "Published", "source": "osv_bellsoft \u00b7 BELL-CVE-2026-99082", "record": "BELL-CVE-2026-99082", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-30T12:41:37.510Z", "date_only": false, "value": "2026-10-30T12:41:37.510Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2026-99082", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2026-10-30T12:41:37.510Z", "date_only": false, "value": "2026-10-30T12:41:37.510Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / Linux", "record": "CVE-2026-99082", 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