195 lines
10 KiB
JSON
195 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-2024-58237",
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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": "2025-04-16T07:19:43.804Z",
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"datePublished": "2025-05-05T14:53:34.153Z",
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"dateUpdated": "2026-10-15T21:51:51.261Z"
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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": "2026-08-05T11:47:47.022Z"
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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\nbpf: consider that tail calls invalidate packet pointers\n\nTail-called programs could execute any of the helpers that invalidate\npacket pointers. Hence, conservatively assume that each tail call\ninvalidates packet pointers.\n\nMaking the change in bpf_helper_changes_pkt_data() automatically makes\nuse of check_cfg() logic that computes 'changes_pkt_data' effect for\nglobal sub-programs, such that the following program could be\nrejected:\n\n int tail_call(struct __sk_buff *sk)\n {\n \tbpf_tail_call_static(sk, &jmp_table, 0);\n \treturn 0;\n }\n\n SEC(\"tc\")\n int not_safe(struct __sk_buff *sk)\n {\n \tint *p = (void *)(long)sk->data;\n \t... make p valid ...\n \ttail_call(sk);\n \t*p = 42; /* this is unsafe */\n \t...\n }\n\nThe tc_bpf2bpf.c:subprog_tc() needs change: mark it as a function that\ncan invalidate packet pointers. Otherwise, it can't be freplaced with\ntailcall_freplace.c:entry_freplace() that does a tail 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 vulnerability is a BPF verifier flaw triggered by loading a crafted eBPF program through the bpf() syscall; the resulting memory corruption occurs during local packet processing controlled by the attacker, requiring local access.\nAC:L - The attacker fully controls the malicious program, its subprogram/tail-call structure, and the heap grooming, so acceptance by the buggy verifier and the subsequent stale-pointer dereference are fully reliable with no attacker-uncontrolled conditions.\nPR:L - Reaching the flaw requires loading a packet-processing eBPF program (e.g., SCHED_CLS/tc) which needs the CAP_BPF/CAP_NET_ADMIN privilege over the BPF subsystem — a limited, delegatable privilege over the component rather than full root.\nUI:N - The attacker loads, attaches, and triggers the malicious program entirely on their own; no action by any other user is required.\nS:U - The verifier bypass corrupts kernel heap memory within the kernel's own security authority; there is no crossing into a different security scope such as a VM or IOMMU boundary.\nC:H - The stale packet pointer permits out-of-bounds reads of reallocated/adjacent kernel heap memory, allowing disclosure of sensitive kernel data.\nI:H - The verifier accepts a program that writes through a stale packet pointer (`*p = 42`), giving a controlled out-of-bounds write to kernel heap memory that can be leveraged into an arbitrary-write/control-flow-hijack primitive.\nA:H - Out-of-bounds reads/writes on reallocated kernel heap memory readily cause kernel memory corruption and panic/oops."
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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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"net/core/filter.c",
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"tools/testing/selftests/bpf/progs/tc_bpf2bpf.c"
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],
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"versions": [
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{
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"version": "51c39bb1d5d105a02e29aa7960f0a395086e6342",
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"lessThan": "f1692ee23dcaaddc24ba407b269707ee5df1301f",
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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": "51c39bb1d5d105a02e29aa7960f0a395086e6342",
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"lessThan": "1c2244437f9ad3dd91215f920401a14f2542dbfc",
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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": "51c39bb1d5d105a02e29aa7960f0a395086e6342",
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"lessThan": "1a4607ffba35bf2a630aab299e34dd3f6e658d70",
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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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"net/core/filter.c",
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"tools/testing/selftests/bpf/progs/tc_bpf2bpf.c"
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],
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"versions": [
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{
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"version": "5.6",
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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": "5.6",
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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": "6.6.90",
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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": "6.12.9",
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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": "5.6",
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"versionEndExcluding": "6.6.90"
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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": "5.6",
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"versionEndExcluding": "6.12.9"
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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": "5.6",
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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/f1692ee23dcaaddc24ba407b269707ee5df1301f"
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},
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{
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"url": "https://git.kernel.org/stable/c/1c2244437f9ad3dd91215f920401a14f2542dbfc"
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},
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{
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"url": "https://git.kernel.org/stable/c/1a4607ffba35bf2a630aab299e34dd3f6e658d70"
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}
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],
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"title": "bpf: consider that tail calls invalidate packet pointers",
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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-2024-58237",
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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": "2026-10-15T21:42:22.906486Z"
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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": "2026-10-15T21:51:51.261Z"
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}
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}
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]
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}
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} |