222 lines
11 KiB
JSON
222 lines
11 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-2026-64160",
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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": "2026-07-19T07:54:57.038Z",
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"datePublished": "2026-07-19T15:40:47.063Z",
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"dateUpdated": "2026-10-19T20:28:14.119Z"
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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": "2026-08-05T12:39:50.187Z"
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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\nnetfs: Fix potential for tearing in ->remote_i_size and ->zero_point\n\nFix potential tearing in using ->remote_i_size and ->zero_point by copying\ni_size_read() and i_size_write() and using the same seqcount as for i_size.\n\nWe need to make sure that netfslib and the filesystems that use it always\nhold i_lock whilst updating any of the sizes to prevent i_size_seqcount\nfrom getting corrupted."
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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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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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:N - The bug is in netfs client code (CIFS/SMB, AFS, 9p) reached when processing network filesystem protocol responses and concurrent I/O; a malicious remote server can drive attribute/size updates that race with client read/write paths.\nAC:L - The attacker controls both sides of the race by timing SMB/AFS/9p responses against concurrent local read/write/DIO operations, or by spawning parallel threads performing file I/O on the same inode.\nPR:N - A remote malicious filesystem server needs no privileges on the victim host; exploitation only requires the victim system to perform routine I/O against a mounted attacker-controlled or MITM'd network share.\nUI:N - No per-attack discretionary user action is required beyond an existing CIFS/AFS/9p mount and normal automated or concurrent file access, which is typical in enterprise and embedded deployments.\nS:U - Impact is confined to the victim kernel's netfs client subsystem and does not cross a VM, IOMMU, or other security-authority boundary.\nC:H - Torn 64-bit size values produce attacker-influenceable arbitrary bounds used in read-length and EOF decisions, potentially causing out-of-bounds kernel reads or stale-cache data exposure beyond intended file ranges.\nI:H - Corrupted size metadata causes incorrect zero-filling, skipped server reads, and wrong EOF handling, enabling arbitrary modification of file content visible to applications and incorrect size metadata written back to the server.\nA:H - Unsynchronized writes can corrupt i_size_seqcount, causing i_size_read() and related readers to spin forever, producing soft lockups and denial of service for affected inodes and dependent processes."
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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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"fs/9p/v9fs_vfs.h",
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"fs/9p/vfs_inode.c",
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"fs/9p/vfs_inode_dotl.c",
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"fs/afs/file.c",
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"fs/afs/inode.c",
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"fs/afs/internal.h",
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"fs/afs/write.c",
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"fs/netfs/buffered_read.c",
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"fs/netfs/buffered_write.c",
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"fs/netfs/direct_write.c",
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"fs/netfs/misc.c",
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"fs/netfs/write_collect.c",
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"fs/smb/client/cifsfs.c",
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"fs/smb/client/cifssmb.c",
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"fs/smb/client/file.c",
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"fs/smb/client/inode.c",
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"fs/smb/client/readdir.c",
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"fs/smb/client/smb2ops.c",
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"fs/smb/client/smb2pdu.c",
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"include/linux/netfs.h"
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],
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"versions": [
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{
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"version": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9",
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"lessThan": "55970f238d495517edc961d55c44c772594d0969",
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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": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9",
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"lessThan": "2c8f4742bb76117d735f92a3932d85239b16c494",
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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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"fs/9p/v9fs_vfs.h",
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"fs/9p/vfs_inode.c",
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"fs/9p/vfs_inode_dotl.c",
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"fs/afs/file.c",
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"fs/afs/inode.c",
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"fs/afs/internal.h",
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"fs/afs/write.c",
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"fs/netfs/buffered_read.c",
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"fs/netfs/buffered_write.c",
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"fs/netfs/direct_write.c",
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"fs/netfs/misc.c",
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"fs/netfs/write_collect.c",
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"fs/smb/client/cifsfs.c",
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"fs/smb/client/cifssmb.c",
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"fs/smb/client/file.c",
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"fs/smb/client/inode.c",
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"fs/smb/client/readdir.c",
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"fs/smb/client/smb2ops.c",
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"fs/smb/client/smb2pdu.c",
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"include/linux/netfs.h"
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],
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"versions": [
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{
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"version": "5.18",
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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": "5.18",
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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": "7.0.11",
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"lessThanOrEqual": "7.0.*",
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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": "7.1",
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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": "5.18",
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"versionEndExcluding": "7.0.11"
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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": "5.18",
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"versionEndExcluding": "7.1"
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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/55970f238d495517edc961d55c44c772594d0969"
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},
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{
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"url": "https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494"
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}
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],
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"title": "netfs: Fix potential for tearing in ->remote_i_size and ->zero_point",
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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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"id": "CVE-2026-64160",
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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": "yes"
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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": "2026-10-16T15:37:03.470970Z"
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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-362",
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"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"
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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": "2026-10-19T20:28:14.119Z"
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}
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}
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]
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}
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} |