199 lines
9.2 KiB
JSON
199 lines
9.2 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-2022-49889",
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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": "2025-05-01T14:05:17.242Z",
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"datePublished": "2025-05-01T14:10:33.832Z",
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"dateUpdated": "2026-05-23T15:23:09.111Z"
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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": "2026-05-23T15:23:09.111Z"
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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\nring-buffer: Check for NULL cpu_buffer in ring_buffer_wake_waiters()\n\nOn some machines the number of listed CPUs may be bigger than the actual\nCPUs that exist. The tracing subsystem allocates a per_cpu directory with\naccess to the per CPU ring buffer via a cpuX file. But to save space, the\nring buffer will only allocate buffers for online CPUs, even though the\nCPU array will be as big as the nr_cpu_ids.\n\nWith the addition of waking waiters on the ring buffer when closing the\nfile, the ring_buffer_wake_waiters() now needs to make sure that the\nbuffer is allocated (with the irq_work allocated with it) before trying to\nwake waiters, as it will cause a NULL pointer dereference.\n\nWhile debugging this, I added a NULL check for the buffer itself (which is\nOK to do), and also NULL pointer checks against buffer->buffers (which is\nnot fine, and will WARN) as well as making sure the CPU number passed in\nis within the nr_cpu_ids (which is also not fine if it isn't).\n\n\nBugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=1204705"
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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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"kernel/trace/ring_buffer.c"
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],
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"versions": [
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{
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"version": "2475de2bc0de17fb1b24c5e90194f84b5ca70d3e",
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"lessThan": "b5074df412bf3df9d6ce096b6fa03eb1082d05c9",
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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": "f4f15344110d0b5b8822ac97bc8200e71939c945",
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"lessThan": "49ca992f6e50d0f46ec9608f44e011cf3121f389",
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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": "f3ddb74ad0790030c9592229fb14d8c451f4e9a8",
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"lessThan": "7433632c9ff68a991bd0bc38cabf354e9d2de410",
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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": "5544f411a4e8bc39e6a444badbac37dd0e0caf0a",
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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": "5.19.17",
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"lessThan": "5.20",
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"status": "affected",
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"versionType": "semver"
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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": "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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"kernel/trace/ring_buffer.c"
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],
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"versions": [
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{
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"version": "5.15.75",
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"lessThan": "5.15.78",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.0.3",
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"lessThan": "6.0.8",
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"status": "affected",
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"versionType": "semver"
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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": "5.15.75",
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"versionEndExcluding": "5.15.78"
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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": "6.0.3",
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"versionEndExcluding": "6.0.8"
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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": "5.19.17"
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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/b5074df412bf3df9d6ce096b6fa03eb1082d05c9"
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},
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{
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"url": "https://git.kernel.org/stable/c/49ca992f6e50d0f46ec9608f44e011cf3121f389"
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},
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{
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"url": "https://git.kernel.org/stable/c/7433632c9ff68a991bd0bc38cabf354e9d2de410"
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}
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],
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"title": "ring-buffer: Check for NULL cpu_buffer in ring_buffer_wake_waiters()",
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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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"problemTypes": [
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{
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"descriptions": [
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{
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"type": "CWE",
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"cweId": "CWE-476",
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"lang": "en",
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"description": "CWE-476 NULL Pointer Dereference"
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}
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]
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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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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.5,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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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": "NONE"
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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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"timestamp": "2025-10-01T16:09:57.289350Z",
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"id": "CVE-2022-49889",
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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": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2025-10-01T16:10:00.993Z"
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}
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}
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]
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}
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} |