272 lines
14 KiB
JSON
272 lines
14 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-2024-46816",
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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": "2024-09-11T15:12:18.283Z",
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"datePublished": "2024-09-27T12:35:57.742Z",
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"dateUpdated": "2026-08-05T11:38:47.072Z"
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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": "2026-08-05T11:38:47.072Z"
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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\ndrm/amd/display: Stop amdgpu_dm initialize when link nums greater than max_links\n\n[Why]\nCoverity report OVERRUN warning. There are\nonly max_links elements within dc->links. link\ncount could up to AMDGPU_DM_MAX_DISPLAY_INDEX 31.\n\n[How]\nMake sure link count less than max_links."
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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 overrun occurs in the amdgpu display-manager probe path (`dm_hw_init` → `amdgpu_dm_init` → `amdgpu_dm_initialize_drm_device`), reachable only on the local system via driver bind/module load on affected hardware, with no network or remote-peer input involved.\nAC:L - On an affected configuration (USB4 DPIA-capable DCN31/314/35 part whose connector count plus DPIA and virtual links exceeds MAX_LINKS=12) the out-of-bounds indexing happens deterministically every probe — there is no race and no memory-layout lottery to win.\nPR:L - Consistent with sibling amdgpu display OOB scoring, a low-privileged local user is credited with reaching the driver initialization path; no root-only capability check gates the vulnerable loop itself.\nUI:N - The faulty loop executes automatically during GPU driver initialization with no victim action required — no file must be opened, no display attached, no configuration performed.\nS:U - The out-of-bounds access and its consequences are confined to kernel memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Indices 12–31 read past `dc->links[MAX_LINKS]` into adjacent `struct dc` members (`link_srv`, `current_state`, `res_pool`, `clk_mgr`), disclosing kernel pointers, and the resulting type-confused `dc_link *` is dereferenced for further wide reads (`link->dpcd_caps`, `link->type`).\nI:H - The out-of-bounds `link` pointer is written through — `link->psr_settings.psr_feature_enabled/psr_version` and the writes inside `dc_link_detect()`/`amdgpu_dm_set_psr_caps()` — so unrelated kernel objects are corrupted at attacker-unintended offsets, a classic type-confusion write primitive.\nA:H - Dereferencing garbage taken from beyond the array as a `struct dc_link *` reliably faults or corrupts core display-manager state during initialization, producing a kernel oops/panic at boot."
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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/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c"
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],
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"versions": [
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{
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"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "e2411b6abf6e5d6c33d0450846673cdf536f0ba4",
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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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "e3cd0d8362de47f613bfdf315b3f3a9ab71e66bf",
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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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "13080d052c995aee14695a5b740c245121eb2bcc",
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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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "c84632096722fd31251f0957fafc9e90d9a247fd",
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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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "36c39a8dcce210649f2f45f252abaa09fcc1ae87",
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"status": "affected",
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"versionType": "git"
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{
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"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "cf8b16857db702ceb8d52f9219a4613363e2b1cf",
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"status": "affected",
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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/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c"
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],
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"versions": [
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{
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"version": "4.15",
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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": "4.15",
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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": "5.10.237",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.181",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.135",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.88",
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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": "6.10.9",
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"lessThanOrEqual": "6.10.*",
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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",
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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": "4.15",
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"versionEndExcluding": "5.10.237"
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/e2411b6abf6e5d6c33d0450846673cdf536f0ba4"
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},
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{
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"url": "https://git.kernel.org/stable/c/e3cd0d8362de47f613bfdf315b3f3a9ab71e66bf"
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"url": "https://git.kernel.org/stable/c/13080d052c995aee14695a5b740c245121eb2bcc"
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{
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"url": "https://git.kernel.org/stable/c/c84632096722fd31251f0957fafc9e90d9a247fd"
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{
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"url": "https://git.kernel.org/stable/c/36c39a8dcce210649f2f45f252abaa09fcc1ae87"
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},
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{
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"url": "https://git.kernel.org/stable/c/cf8b16857db702ceb8d52f9219a4613363e2b1cf"
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}
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],
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"title": "drm/amd/display: Stop amdgpu_dm initialize when link nums greater than max_links",
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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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"timestamp": "2024-09-29T14:17:56.570304Z",
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"id": "CVE-2024-46816",
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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": "2024-09-29T14:18:08.645Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
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},
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
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}
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],
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T19:31:12.490Z"
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}
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}
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]
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}
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} |