225 lines
12 KiB
JSON
225 lines
12 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-2025-39896",
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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": "2025-04-16T07:20:57.146Z",
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"datePublished": "2025-10-01T07:42:44.714Z",
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"dateUpdated": "2026-08-05T12:05:57.549Z"
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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": "2026-08-05T12:05:57.549Z"
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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\naccel/ivpu: Prevent recovery work from being queued during device removal\n\nUse disable_work_sync() instead of cancel_work_sync() in ivpu_dev_fini()\nto ensure that no new recovery work items can be queued after device\nremoval has started. Previously, recovery work could be scheduled even\nafter canceling existing work, potentially leading to use-after-free\nbugs if recovery accessed freed resources.\n\nRename ivpu_pm_cancel_recovery() to ivpu_pm_disable_recovery() to better\nreflect its new behavior."
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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 Intel NPU is an integrated PCI device driven through local ioctls on /dev/accel/accel0 and local sysfs/module operations; there is no network or adjacent-network path into ivpu_pm_trigger_recovery() or ivpu_dev_fini().\nAC:L - The attacker fully controls the recovery-triggering side of the race and can arm it persistently — wedging the NPU firmware makes every subsequent JSM/IPC message time out, so once teardown starts, `ivpu_pm_trigger_recovery()` fires from context_abort_work, IRQ handlers, or IPC timeouts with near-certainty rather than as a low-probability window, and the attempt can be repeated indefinitely at no cost.\nPR:L - Reaching the recovery triggers only needs an open handle to the accel render node — all ivpu ioctls are declared with flags 0 (no DRM_ROOT_ONLY/DRM_AUTH), so any local user in the render/uaccess group can submit faulting jobs and hang the firmware.\nUI:N - No victim must open attacker-supplied content or perform an interactive action; device teardown also occurs from automated events such as package-driven driver reload, PCI error handling, and shutdown/unbind scripts.\nS:U - The use-after-free corrupts kernel-managed driver structures within the same security authority; there is no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The late-running recovery worker reads freed drmm/GEM allocations (fw->mem, ipc->mem_tx/rx, a destroyed context_xa) and drives ivpu_dev_coredump()/ivpu_jsm_state_dump() over them, and a freed-then-reallocated work_struct yields a controllable dispatch — usable for arbitrary kernel memory disclosure.\nI:H - ivpu_ipc_reset() memsets and ivpu_fw_load() memcpys directly into buffer objects already released by ivpu_ipc_fini()/ivpu_fw_mem_fini(), writing into freed pages that can be reallocated to other kernel objects; the freed work->func dereference additionally gives control-flow hijack potential.\nA:H - The use-after-free reliably produces a kernel oops or panic — NULL/freed ivpu_bo_vaddr() dereferences, iteration of a destroyed xarray, and MMIO access to a powered-down D3hot device — taking down the whole system."
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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/accel/ivpu/ivpu_drv.c",
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"drivers/accel/ivpu/ivpu_pm.c",
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"drivers/accel/ivpu/ivpu_pm.h"
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],
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"versions": [
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{
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"version": "58cde80f45a2b1683ea3c24a9a9a4b0e1005336b",
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"lessThan": "54c49eca38dbd06913a696f6d7610937dcfad226",
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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": "58cde80f45a2b1683ea3c24a9a9a4b0e1005336b",
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"lessThan": "565d2c15b6c36c3250e694f7b9a86229c1787be5",
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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": "58cde80f45a2b1683ea3c24a9a9a4b0e1005336b",
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"lessThan": "69a79ada8eb034ce016b5b78fb7d08d8687223de",
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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/accel/ivpu/ivpu_drv.c",
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"drivers/accel/ivpu/ivpu_pm.c",
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"drivers/accel/ivpu/ivpu_pm.h"
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],
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"versions": [
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{
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"version": "6.8",
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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": "6.8",
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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": "6.12.46",
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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": "6.16.6",
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"lessThanOrEqual": "6.16.*",
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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",
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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": "6.8",
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"versionEndExcluding": "6.12.46"
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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": "6.8",
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"versionEndExcluding": "6.16.6"
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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": "6.8",
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"versionEndExcluding": "6.17"
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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/54c49eca38dbd06913a696f6d7610937dcfad226"
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},
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{
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"url": "https://git.kernel.org/stable/c/565d2c15b6c36c3250e694f7b9a86229c1787be5"
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},
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{
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"url": "https://git.kernel.org/stable/c/69a79ada8eb034ce016b5b78fb7d08d8687223de"
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}
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],
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"title": "accel/ivpu: Prevent recovery work from being queued during device removal",
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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-2025-39896",
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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": "2026-01-14T19:28:28.158447Z"
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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-416",
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"description": "CWE-416 Use After Free"
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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": "2026-01-14T19:33:13.870Z"
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}
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}
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]
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}
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} |