347 lines
17 KiB
JSON
347 lines
17 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-2022-50384",
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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": "2025-09-17T14:53:06.997Z",
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"datePublished": "2025-09-18T13:33:05.759Z",
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"dateUpdated": "2026-08-05T08:58:29.333Z"
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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": "2026-08-05T08:58:29.333Z"
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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\nstaging: vme_user: Fix possible UAF in tsi148_dma_list_add\n\nSmatch report warning as follows:\n\ndrivers/staging/vme_user/vme_tsi148.c:1757 tsi148_dma_list_add() warn:\n '&entry->list' not removed from list\n\nIn tsi148_dma_list_add(), the error path \"goto err_dma\" will not\nremove entry->list from list->entries, but entry will be freed,\nthen list traversal may cause UAF.\n\nFix by removeing it from list->entries before free()."
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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 UAF is in the TSI148 VME bridge DMA-list builder (`tsi148_dma_list_add`), reached only through the local VME DMA API (`vme_dma_list_add`) used by VME device drivers on systems with the PCI TSI148 bridge—not via network packets or physical attachment alone.\nAC:L - An attacker who can drive DMA-list add/free can induce a `dma_map_single` failure (IOVA/swiotlb exhaustion), leave the freed entry linked, then trigger UAF on the next add (`prev->descriptor` write), `tsi148_dma_list_exec`, or `tsi148_dma_list_empty`; no attacker-uncontrollable race is required.\nPR:L - The VME DMA path has no `capable()`/`CAP_*` gate—only whatever DAC the consuming driver/device node applies. On TSI148 industrial/DAQ deployments (the intended consumers of this EXPORT_SYMBOL API), a non-root service account with VME device access is a reasonable worst case, matching CVE-2026-64449 for this subsystem.\nUI:N - The attacker initiates the DMA-list operations that hit the err_dma path and subsequent list walk themselves; no separate victim action is required.\nS:U - This is a standard in-kernel heap UAF within the host VME bridge driver and does not cross a VM, IOMMU, or other security-authority boundary.\nC:H - Use-after-free of the linked `tsi148_dma_entry` lets an attacker reclaim the object and control contents read on later list traversal/exec, enabling arbitrary kernel memory disclosure per UAF guidance.\nI:H - The same dangling list entry is written via the next-add prev-link update, and `tsi148_dma_list_empty` can double-free/unmap with a garbage `dma_handle`, yielding heap corruption and control-flow hijack primitives.\nA:H - Any subsequent list walk of the freed entry (empty/exec/add) can oops/panic the kernel, so availability impact is High even without full exploitation."
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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/staging/vme_user/vme_tsi148.c"
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],
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"versions": [
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{
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"version": "b2383c90a9d691201b9aee557776694cde86a935",
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"lessThan": "5cc4eea715a3fcf4e516662f736dfee63979465f",
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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": "b2383c90a9d691201b9aee557776694cde86a935",
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"lessThan": "51c0ad3b7c5b01f9314758335a13f157b05fa56d",
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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": "b2383c90a9d691201b9aee557776694cde86a935",
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"lessThan": "e6b0adff99edf246ba1f8d464530a0438cb1cbda",
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"status": "affected",
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},
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{
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"lessThan": "a45ba33d398a821147d7e5f16ead7eb125e331e2",
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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": "b2383c90a9d691201b9aee557776694cde86a935",
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"lessThan": "5d2b286eb034af114f67d9967fc3fbc1829bb712",
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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": "b2383c90a9d691201b9aee557776694cde86a935",
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"lessThan": "1f5661388f43df3ac106ce93e67d8d22b16a78ff",
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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": "b2383c90a9d691201b9aee557776694cde86a935",
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"lessThan": "cf138759a7e92c75cfc1b7ba705e4108fe330edf",
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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": "b2383c90a9d691201b9aee557776694cde86a935",
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"lessThan": "85db68fc901da52314ded80aace99f8b684c7815",
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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": "b2383c90a9d691201b9aee557776694cde86a935",
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"lessThan": "357057ee55d3c99a5de5abe8150f7bca04f8e53b",
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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/staging/vme_user/vme_tsi148.c"
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],
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"versions": [
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{
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"version": "4.2",
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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": "4.2",
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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": "4.9.337",
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"lessThanOrEqual": "4.9.*",
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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": "4.14.303",
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"lessThanOrEqual": "4.14.*",
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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": "4.19.270",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.229",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.163",
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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": "5.15.86",
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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": "6.0.16",
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"lessThanOrEqual": "6.0.*",
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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": "6.1.2",
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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": "6.2",
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.2",
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"versionEndExcluding": "4.9.337"
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},
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/5cc4eea715a3fcf4e516662f736dfee63979465f"
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},
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{
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"url": "https://git.kernel.org/stable/c/51c0ad3b7c5b01f9314758335a13f157b05fa56d"
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},
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{
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"url": "https://git.kernel.org/stable/c/e6b0adff99edf246ba1f8d464530a0438cb1cbda"
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},
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{
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"url": "https://git.kernel.org/stable/c/a45ba33d398a821147d7e5f16ead7eb125e331e2"
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},
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{
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"url": "https://git.kernel.org/stable/c/5d2b286eb034af114f67d9967fc3fbc1829bb712"
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},
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{
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"url": "https://git.kernel.org/stable/c/1f5661388f43df3ac106ce93e67d8d22b16a78ff"
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},
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{
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"url": "https://git.kernel.org/stable/c/cf138759a7e92c75cfc1b7ba705e4108fe330edf"
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},
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{
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"url": "https://git.kernel.org/stable/c/85db68fc901da52314ded80aace99f8b684c7815"
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},
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{
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"url": "https://git.kernel.org/stable/c/357057ee55d3c99a5de5abe8150f7bca04f8e53b"
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}
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],
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"title": "staging: vme_user: Fix possible UAF in tsi148_dma_list_add",
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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-2022-50384",
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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": "2026-01-14T18:48:36.418605Z"
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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": "2026-01-14T18:53:04.397Z"
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}
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}
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]
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}
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} |