209 lines
11 KiB
JSON
209 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-2025-40344",
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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": "2025-04-16T07:20:57.187Z",
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"datePublished": "2025-12-09T04:10:03.253Z",
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"dateUpdated": "2026-10-15T22:02:46.492Z"
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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": "2026-08-05T12:09:47.053Z"
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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\nASoC: Intel: avs: Disable periods-elapsed work when closing PCM\n\navs_dai_fe_shutdown() handles the shutdown procedure for HOST HDAudio\nstream while period-elapsed work services its IRQs. As the former\nfrees the DAI's private context, these two operations shall be\nsynchronized to avoid slab-use-after-free or worse errors."
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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 reached only through ALSA PCM device nodes (`/dev/snd/pcmC*D*`) via open/ioctl/close syscalls on a machine with an Intel cAVS DSP audio controller. There is no remote or adjacent-network path to the FE DAI shutdown code.\nAC:L - The attacker controls both sides of the race — the period size (and thus the IRQ rate) via `hw_params`, the exact moment of `close()`, and the `system_wq` backlog that delays the pending `period_elapsed_work` — and the open/start/close sequence can be retried in an unbounded loop until the window is hit.\nPR:L - Only an unprivileged local account with access to the sound device is needed, which is the default for any desktop/seat user, `audio`-group member, or Android media process; no capability or root check exists along `snd_pcm_open` → `avs_dai_fe_startup` → `avs_dai_fe_shutdown`.\nUI:N - The attacking process performs the entire open/hw_params/prepare/start/close sequence itself; no action by another user or victim is required.\nS:U - The use-after-free corrupts kernel slab memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed `avs_dma_data` can be reclaimed by an attacker-sprayed object, after which `avs_period_elapsed_work()` reads `data->substream` and `snd_pcm_period_elapsed()` follows it into `runtime` — giving attacker-directed kernel reads and disclosure of arbitrary kernel memory.\nI:H - The `work_struct` itself lives in the freed allocation, so the workqueue writes list/`work->data` fields into reclaimed memory and dispatches through a freed `work->func`, and the handler writes through the attacker-controlled `substream`/`runtime` pointers — a control-flow-hijack-capable write primitive.\nA:H - Even unweaponized, the slab use-after-free dereferences freed memory from workqueue context, reliably producing a KASAN splat, oops, or kernel panic."
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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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"sound/soc/intel/avs/pcm.c"
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],
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"versions": [
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{
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"version": "0dbb186c3510cad4e9f443e801bf2e6ab5770c00",
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"lessThan": "ca6d2b7aca778afbf8c0c4b330d10cb228c14052",
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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": "0dbb186c3510cad4e9f443e801bf2e6ab5770c00",
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"lessThan": "b41fca4aa60be896ba8a81b57aac5dcc6eee66c0",
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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": "0dbb186c3510cad4e9f443e801bf2e6ab5770c00",
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"lessThan": "845f716dc5f354c719f6fda35048b6c2eca99331",
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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": "31087af37d6b1586b76d4acf3e0c1634a4617ba6",
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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": "6.11.9",
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"lessThan": "6.12",
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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": "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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"sound/soc/intel/avs/pcm.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": "6.12.58",
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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": "6.17.8",
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"lessThanOrEqual": "6.17.*",
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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": "6.18",
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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": "6.12.58"
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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": "6.17.8"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "6.18"
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.11.9"
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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/ca6d2b7aca778afbf8c0c4b330d10cb228c14052"
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},
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{
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"url": "https://git.kernel.org/stable/c/b41fca4aa60be896ba8a81b57aac5dcc6eee66c0"
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},
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{
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"url": "https://git.kernel.org/stable/c/845f716dc5f354c719f6fda35048b6c2eca99331"
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}
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],
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"title": "ASoC: Intel: avs: Disable periods-elapsed work when closing PCM",
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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-2025-40344",
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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": "2026-10-15T21:59:36.622364Z"
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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": "2026-10-15T22:02:46.492Z"
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}
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}
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]
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}
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} |