200 lines
10 KiB
JSON
200 lines
10 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-2024-56784",
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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": "2024-12-29T11:26:39.769Z",
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"datePublished": "2025-01-08T17:52:00.503Z",
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"dateUpdated": "2026-08-05T11:46:28.847Z"
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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": "2026-08-05T11:46:28.847Z"
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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\ndrm/amd/display: Adding array index check to prevent memory corruption\n\n[Why & How]\nArray indices out of bound caused memory corruption. Adding checks to\nensure that array index stays in bound."
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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:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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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 overflow is driven by a DRM atomic modeset/writeback commit on /dev/dri/card0, which requires local access to the GPU device node; there is no network or remote data path into the clk_mgr bandwidth notifier.\nAC:L - On affected DCN 3.5.1 hardware the out-of-bounds index is deterministic — the writeback connector's virtual link always sits four indices above the lowest DPIA link, yielding hr_index==2 on every commit — with no race, timing window, or memory-layout condition outside the attacker's control.\nPR:L - An unprivileged local user in a graphical session (holding DRM master via logind, or any user with access to the card node in a container/kiosk) can issue the atomic commit that reaches dcn35_notify_host_router_bw; no root or CAP_SYS_ADMIN is needed.\nUI:N - The attacker performs the DRM_IOCTL_MODE_ATOMIC call itself; no victim action such as plugging in a monitor or dock is required, since the offending virtual/writeback link is created unconditionally at driver init.\nS:U - The corruption is confined to the kernel's own stack within the amdgpu display driver; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The out-of-bounds access is a read-modify-write that reads adjacent stack contents beyond the 2-element array, and clobbering saved pointers/registers in the frame is leverageable into a kernel memory disclosure primitive.\nI:H - This is an out-of-bounds stack write whose value (pixel-clock-derived bandwidth in kbps) is attacker-influenced through the committed display mode, allowing an arbitrary 32-bit addend to be applied to adjacent stack slots including saved registers and return-address region — a control-flow hijack primitive.\nA:H - Corrupting stack memory past host_router_bw_kbps[] reliably produces stack-protector panics, oopses, or hangs on every affected display commit, and the attacker can repeat it at will."
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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/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c"
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],
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"versions": [
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{
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"version": "0057b36ac2be0f573048acda52e641e0502a9ff3",
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"lessThan": "dff526dc3e27f5484f5ba11471b9fbbe681467f2",
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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": "0057b36ac2be0f573048acda52e641e0502a9ff3",
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"lessThan": "2c437d9a0b496168e1a1defd17b531f0a526dbe9",
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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/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c"
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],
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"versions": [
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{
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"version": "6.11",
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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": "6.11",
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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": "6.12.5",
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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": "6.13",
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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": "6.11",
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"versionEndExcluding": "6.12.5"
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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": "6.11",
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"versionEndExcluding": "6.13"
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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/dff526dc3e27f5484f5ba11471b9fbbe681467f2"
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},
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{
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"url": "https://git.kernel.org/stable/c/2c437d9a0b496168e1a1defd17b531f0a526dbe9"
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}
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],
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"title": "drm/amd/display: Adding array index check to prevent memory corruption",
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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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-2024-56784",
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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": "2025-10-01T19:56:12.168384Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-787",
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"description": "CWE-787 Out-of-bounds Write"
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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": "2025-10-01T19:57:23.425Z"
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}
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}
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]
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}
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} |