197 lines
11 KiB
JSON
197 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-38216",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-04-16T04:51:23.995Z",
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"datePublished": "2025-07-04T13:37:33.906Z",
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"dateUpdated": "2026-10-15T21:52:11.756Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:00:25.669Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Restore context entry setup order for aliased devices\n\nCommit 2031c469f816 (\"iommu/vt-d: Add support for static identity domain\")\nchanged the context entry setup during domain attachment from a\nset-and-check policy to a clear-and-reset approach. This inadvertently\nintroduced a regression affecting PCI aliased devices behind PCIe-to-PCI\nbridges.\n\nSpecifically, keyboard and touchpad stopped working on several Apple\nMacbooks with below messages:\n\n kernel: platform pxa2xx-spi.3: Adding to iommu group 20\n kernel: input: Apple SPI Keyboard as\n /devices/pci0000:00/0000:00:1e.3/pxa2xx-spi.3/spi_master/spi2/spi-APP000D:00/input/input0\n kernel: DMAR: DRHD: handling fault status reg 3\n kernel: DMAR: [DMA Read NO_PASID] Request device [00:1e.3] fault addr\n 0xffffa000 [fault reason 0x06] PTE Read access is not set\n kernel: DMAR: DRHD: handling fault status reg 3\n kernel: DMAR: [DMA Read NO_PASID] Request device [00:1e.3] fault addr\n 0xffffa000 [fault reason 0x06] PTE Read access is not set\n kernel: applespi spi-APP000D:00: Error writing to device: 01 0e 00 00\n kernel: DMAR: DRHD: handling fault status reg 3\n kernel: DMAR: [DMA Read NO_PASID] Request device [00:1e.3] fault addr\n 0xffffa000 [fault reason 0x06] PTE Read access is not set\n kernel: DMAR: DRHD: handling fault status reg 3\n kernel: applespi spi-APP000D:00: Error writing to device: 01 0e 00 00\n\nFix this by restoring the previous context setup order."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
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"baseScore": 8.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The faulty ordering is reached through local operations that attach or detach IOMMU domains — driver bind/unbind, device hotplug/probe, or VFIO/iommufd device assignment ioctls — not through any network-facing path.\nAC:L - On any platform with DMA-aliased devices (PCIe-to-PCI bridge children, or ACPI-scoped non-PCI devices sharing a parent's source-ID, which land in a separate IOMMU group via generic_device_group()), the clobber is deterministic and repeatable by simply triggering an attach on the sibling device; no race or unpredictable memory layout is involved.\nPR:L - Driving a domain attach requires only low-privileged local access to the device/VFIO interfaces, and in the device-assignment case the beneficiary is an unprivileged guest whose assigned device's context entry gets reprogrammed by an unrelated host attach.\nUI:N - No victim action is needed — the mis-ordered clear-and-reset happens automatically during normal device probe and default-domain attachment.\nS:C - This breaks the IOMMU/DMA isolation boundary itself: a shared context entry ends up programmed with another domain's page tables or with CONTEXT_TT_PASS_THROUGH, so DMA from one security domain reaches memory belonging to a different one (host memory from a guest-assigned device).\nC:H - A device left with the wrong domain's second-level page tables — or with pass-through translation — can DMA-read memory it was never granted, up to all host physical memory in the passthrough case.\nI:H - The same wrong or pass-through context entry grants DMA writes into another domain's or the host's physical memory, which is a direct arbitrary-write primitive usable for control-flow hijack; a stale entry can also point at a torn-down domain's page tables.\nA:H - The demonstrated effect is a DMAR fault storm and permanently dead devices (keyboard and touchpad stop working, \"DRHD: handling fault status reg 3\" flooding), and DMA through freed or wrong page tables can corrupt kernel memory and panic the system."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/iommu/intel/iommu.c",
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"drivers/iommu/intel/iommu.h",
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"drivers/iommu/intel/nested.c"
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],
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"versions": [
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{
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"version": "2031c469f8161abe74189cb74f50da224f340b71",
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"lessThan": "fb5873b779dd5858123c19bbd6959566771e2e83",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2031c469f8161abe74189cb74f50da224f340b71",
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"lessThan": "d43c81b691813e16a2d08208ce8947aebdab83cd",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2031c469f8161abe74189cb74f50da224f340b71",
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"lessThan": "320302baed05c6456164652541f23d2a96522c06",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/iommu/intel/iommu.c",
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"drivers/iommu/intel/iommu.h",
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"drivers/iommu/intel/nested.c"
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],
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"versions": [
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{
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"version": "6.12",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.12",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.35",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.15.4",
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"lessThanOrEqual": "6.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.16",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "6.12.35"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "6.15.4"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "6.16"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/fb5873b779dd5858123c19bbd6959566771e2e83"
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},
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{
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"url": "https://git.kernel.org/stable/c/d43c81b691813e16a2d08208ce8947aebdab83cd"
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},
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{
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"url": "https://git.kernel.org/stable/c/320302baed05c6456164652541f23d2a96522c06"
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}
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],
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"title": "iommu/vt-d: Restore context entry setup order for aliased devices",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2025-38216",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-15T21:48:38.386362Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-15T21:52:11.756Z"
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}
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}
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]
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}
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} |