220 lines
11 KiB
JSON
220 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-2024-53109",
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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": "2024-11-19T17:17:24.993Z",
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"datePublished": "2024-12-02T13:44:41.622Z",
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"dateUpdated": "2026-08-05T11:43:47.659Z"
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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": "2026-08-05T11:43:47.659Z"
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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\nnommu: pass NULL argument to vma_iter_prealloc()\n\nWhen deleting a vma entry from a maple tree, it has to pass NULL to\nvma_iter_prealloc() in order to calculate internal state of the tree, but\nit passed a wrong argument. As a result, nommu kernels crashed upon\naccessing a vma iterator, such as acct_collect() reading the size of vma\nentries after do_munmap().\n\nThis commit fixes this issue by passing a right argument to the\npreallocation call."
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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 vulnerable code is reached through the munmap(2) syscall (vm_munmap → do_munmap → delete_vma_from_mm) and unconditionally via exit_mmap() on process exit, requiring local execution on the target. There is no network-facing path into mm/nommu.c.\nAC:L - On a NOMMU kernel the wrong store type is computed deterministically on every whole-VMA unmap, and because NOMMU VMAs are separated by NULL gap slots the invariant-breaking adjacent-NULL condition is produced essentially every time; the attacker fully controls VMA layout via mmap/munmap and needs no race or unpredictable memory state.\nPR:L - Any unprivileged local user can call mmap()/munmap() and exit a process; no capability, namespace, or filesystem permission is checked anywhere along the path.\nUI:N - The attacker triggers the corruption entirely within its own process by unmapping its own mappings, and the crash/OOB traversal occurs in that same process's context. No victim action is required.\nS:U - The corruption is confined to the kernel's own mm_struct maple tree and is exploited within the kernel's security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - mas_next_slot() walks past the end of the 256-byte maple node reading adjacent slab memory as slots/pivots, an unbounded out-of-bounds read whose values are returned as a VMA pointer and then dereferenced; leaked kernel heap contents surface to userspace through vma-iterator consumers such as acct_collect()'s vsize accounting and /proc-based VMA reporting.\nI:H - The out-of-bounds-derived pointer is used as a struct vm_area_struct in exit_mmap()'s delete_vma() path, giving an indirect call through vma->vm_ops->close, a refcount decrement via fput(vma->vm_file), and a slab free via vm_area_free() on an attacker-influenced address — a control-flow hijack and arbitrary-free primitive, on top of the persistent maple-tree gap/metadata corruption.\nA:H - The commit explicitly documents that NOMMU kernels crash on any vma-iterator access after do_munmap(); the corruption is permanent for the mm and reliably reproducible, so an unprivileged process can panic the kernel 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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"mm/nommu.c"
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],
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"versions": [
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{
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"version": "b5df09226450165c434084d346fcb6d4858b0d52",
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"lessThan": "8bbf0ab631cdf1dade6745f137cff98751e6ced7",
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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": "b5df09226450165c434084d346fcb6d4858b0d52",
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"lessThan": "aceaf33b7666b72dfb86e0aa977be81e3bcbc727",
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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": "b5df09226450165c434084d346fcb6d4858b0d52",
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"lessThan": "247d720b2c5d22f7281437fd6054a138256986ba",
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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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"mm/nommu.c"
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],
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"versions": [
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{
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"version": "6.6",
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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": "6.6",
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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": "6.6.63",
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"lessThanOrEqual": "6.6.*",
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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": "6.11.10",
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"lessThanOrEqual": "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",
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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": "6.6",
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"versionEndExcluding": "6.6.63"
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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": "6.6",
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"versionEndExcluding": "6.11.10"
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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": "6.6",
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"versionEndExcluding": "6.12"
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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/8bbf0ab631cdf1dade6745f137cff98751e6ced7"
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},
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{
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"url": "https://git.kernel.org/stable/c/aceaf33b7666b72dfb86e0aa977be81e3bcbc727"
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},
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{
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"url": "https://git.kernel.org/stable/c/247d720b2c5d22f7281437fd6054a138256986ba"
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}
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],
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"title": "nommu: pass NULL argument to vma_iter_prealloc()",
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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": 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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"id": "CVE-2024-53109",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2025-10-01T20:10:44.376950Z"
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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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"description": "CWE-noinfo Not enough information"
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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": "2025-10-01T20:17:11.504Z"
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}
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}
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]
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}
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} |