242 lines
12 KiB
JSON
242 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-2022-49377",
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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": "2025-02-26T02:08:31.558Z",
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"datePublished": "2025-02-26T02:11:16.607Z",
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"dateUpdated": "2026-08-05T08:54:57.701Z"
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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": "2026-08-05T08:54:57.701Z"
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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\nblk-mq: don't touch ->tagset in blk_mq_get_sq_hctx\n\nblk_mq_run_hw_queues() could be run when there isn't queued request and\nafter queue is cleaned up, at that time tagset is freed, because tagset\nlifetime is covered by driver, and often freed after blk_cleanup_queue()\nreturns.\n\nSo don't touch ->tagset for figuring out current default hctx by the mapping\nbuilt in request queue, so use-after-free on tagset can be avoided. Meantime\nthis way should be fast than retrieving mapping from tagset."
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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 in blk-mq core and is reached via local block-layer paths (device teardown/hot-remove, I/O completion kicking queues), not by processing remote network packets.\nAC:L - An attacker can drive both sides of the race by generating concurrent I/O/queue-run activity while triggering device removal or cleanup, so success does not depend on conditions outside their control.\nPR:L - A basic local user can reach the path via hot-removable block devices they are allowed to use (e.g., USB mass-storage eject/power-off while I/O is in flight); CAP_SYS_ADMIN in the init namespace is not required.\nUI:N - Exploitation does not require a separate victim action; the attacker initiates I/O and device teardown themselves.\nS:U - This is a same-host kernel memory-safety issue (privilege escalation/DoS within the kernel authority), not a scope-changing escape such as guest-to-host or IOMMU bypass.\nC:H - Use-after-free of the driver tagset (including map pointers consulted during hctx lookup) can be turned into an arbitrary read primitive via heap reuse of the freed object.\nI:H - The same UAF enables heap spraying and corruption of reclaimable tagset/map state, which is sufficient for arbitrary write or control-flow hijacking in the kernel.\nA:H - Triggering the dangling tagset access can cause kernel oops/panic even without full exploitation, so availability impact is high."
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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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"block/blk-mq.c"
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],
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"versions": [
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{
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"version": "b6e68ee82585f2ee890b0a897a6aacbf49a467bb",
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"lessThan": "460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff",
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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": "b6e68ee82585f2ee890b0a897a6aacbf49a467bb",
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"lessThan": "b140bac470b4f707cda59c7266214246238661df",
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"status": "affected",
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"versionType": "git"
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},
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{
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"lessThan": "70fdd922c7bf8949f8df109cf2635dff64c90392",
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"status": "affected",
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{
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"lessThan": "5d05426e2d5fd7df8afc866b78c36b37b00188b7",
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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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"block/blk-mq.c"
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],
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"versions": [
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{
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"version": "5.12",
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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": "5.12",
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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": "5.15.47",
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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": "5.17.15",
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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": "5.18.4",
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"lessThanOrEqual": "5.18.*",
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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": "5.19",
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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": "5.12",
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"versionEndExcluding": "5.15.47"
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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": "5.12",
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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": "5.12",
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"versionEndExcluding": "5.18.4"
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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": "5.12",
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"versionEndExcluding": "5.19"
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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/460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff"
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},
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{
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"url": "https://git.kernel.org/stable/c/b140bac470b4f707cda59c7266214246238661df"
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},
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{
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"url": "https://git.kernel.org/stable/c/70fdd922c7bf8949f8df109cf2635dff64c90392"
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},
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{
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"url": "https://git.kernel.org/stable/c/5d05426e2d5fd7df8afc866b78c36b37b00188b7"
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}
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],
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"title": "blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx",
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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-2022-49377",
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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": "2025-02-27T18:16:30.402440Z"
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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": "2025-02-27T18:22:33.551Z"
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}
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}
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]
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}
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} |