279 lines
14 KiB
JSON
279 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-2022-49076",
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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": "2025-02-26T01:49:39.246Z",
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"datePublished": "2025-02-26T01:54:39.251Z",
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"dateUpdated": "2026-08-05T08:53:45.482Z"
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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": "2026-08-05T08:53:45.482Z"
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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\nRDMA/hfi1: Fix use-after-free bug for mm struct\n\nUnder certain conditions, such as MPI_Abort, the hfi1 cleanup code may\nrepresent the last reference held on the task mm.\nhfi1_mmu_rb_unregister() then drops the last reference and the mm is freed\nbefore the final use in hfi1_release_user_pages(). A new task may\nallocate the mm structure while it is still being used, resulting in\nproblems. One manifestation is corruption of the mmap_sem counter leading\nto a hang in down_write(). Another is corruption of an mm struct that is\nin use by another task."
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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 bug is reached only through the hfi1 userspace character device path (/dev/hfi1_*, open/ioctl/write/close), specifically hfi1_file_close → hfi1_user_sdma_free_queues → hfi1_mmu_rb_unregister; it is not triggered by remote RDMA packet processing.\nAC:L - An attacker who opens the device, assigns a context (registering the mmu notifier and pinning SDMA pages), then exits reliably makes hfi1 cleanup the last mm holder because do_exit() calls exit_mm() before exit_files(); no conditions beyond attacker control are required.\nPR:L - The hfi1 user device is created with mode 0666 and assign_ctxt/open perform no capability checks, so any unprivileged local user with access to Omni-Path hardware can open it and trigger the path.\nUI:N - Exploitation requires only the attacker's own process actions (open, ioctl, write, exit); no victim user interaction is needed.\nS:U - Impact is confined to the host kernel privilege boundary (mm_struct corruption / local privilege escalation); there is no VM escape or IOMMU/DMA boundary crossing.\nC:H - This is a use-after-free of mm_struct: after mmu_notifier_unregister frees mm, do_remove still uses it via hfi1_release_user_pages; slab reuse of that mm enables corruption of another task's address-space metadata and arbitrary read primitives.\nI:H - UAF writes (e.g. atomic64_sub on mm->pinned_vm) against a reallocated mm_struct corrupt another task's mm (including mmap_lock and related state), enabling heap-spray-based arbitrary write / control-flow hijacking.\nA:H - The UAF reliably causes kernel hangs (mmap_sem/mmap_lock corruption leading to stuck down_write) and can oops/panic when the freed mm is reused or accessed improperly."
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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/infiniband/hw/hfi1/mmu_rb.c"
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],
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"versions": [
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{
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"version": "3d2a9d642512c21a12d19b9250e7a835dcb41a79",
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"lessThan": "5f54364ff6cfcd14cddf5441c4a490bb28dd69f7",
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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": "3d2a9d642512c21a12d19b9250e7a835dcb41a79",
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"lessThan": "9ca11bd8222a612de0d2f54d050bfcf61ae2883f",
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"status": "affected",
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"lessThan": "0b7186d657ee55e2cdefae498f07d5c1961e8023",
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"status": "affected",
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{
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"version": "3d2a9d642512c21a12d19b9250e7a835dcb41a79",
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"lessThan": "5a9a1b24ddb510715f8f621263938186579a965c",
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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": "3d2a9d642512c21a12d19b9250e7a835dcb41a79",
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"lessThan": "2bbac98d0930e8161b1957dc0ec99de39ade1b3c",
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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": "5732f83596f8a573f2cde814cc76a54e1a8995c7",
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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": "5.9.12",
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"lessThan": "5.10",
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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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"drivers/infiniband/hw/hfi1/mmu_rb.c"
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],
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"versions": [
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{
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"version": "5.10",
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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": "5.10",
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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": "5.10.111",
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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": "5.15.34",
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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": "5.16.20",
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"lessThanOrEqual": "5.16.*",
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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": "5.17.3",
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"lessThanOrEqual": "5.17.*",
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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": "5.18",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.10",
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"versionEndExcluding": "5.10.111"
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"versionEndExcluding": "5.17.3"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.10",
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"versionEndExcluding": "5.18"
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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/5f54364ff6cfcd14cddf5441c4a490bb28dd69f7"
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},
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{
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"url": "https://git.kernel.org/stable/c/9ca11bd8222a612de0d2f54d050bfcf61ae2883f"
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},
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{
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"url": "https://git.kernel.org/stable/c/0b7186d657ee55e2cdefae498f07d5c1961e8023"
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},
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{
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"url": "https://git.kernel.org/stable/c/5a9a1b24ddb510715f8f621263938186579a965c"
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},
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{
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"url": "https://git.kernel.org/stable/c/2bbac98d0930e8161b1957dc0ec99de39ade1b3c"
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}
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],
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"title": "RDMA/hfi1: Fix use-after-free bug for mm struct",
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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-2022-49076",
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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": "2025-02-27T18:17:39.018953Z"
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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": "2025-02-27T18:22:35.583Z"
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}
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}
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]
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}
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} |