253 lines
12 KiB
JSON
253 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-2026-64382",
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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": "2026-07-19T15:36:31.784Z",
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"datePublished": "2026-07-25T08:50:31.937Z",
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"dateUpdated": "2026-10-19T20:38:25.998Z"
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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": "2026-08-17T04:54:33.945Z"
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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\nsmb: client: fix double-free in SMB2_open() replay\n\nA response-bearing attempt can return a replayable error and free its\nresponse buffer. If SMB2_open_init() fails before the next send, cleanup\nretains the previous buffer type and frees that response again.\n\nReset response bookkeeping before each attempt to prevent the stale 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:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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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:N - A malicious SMB2/SMB3 server can trigger the flaw through network-delivered CREATE error responses after a victim mounts or accesses its share.\nAC:L - The server controls the replayable status and can disconnect or refuse reconnection so the next initialization fails; it can repeat the sequence to overcome scheduling variance.\nPR:N - The attacking server needs no account or privileges on the client, because the victim supplies the mounted SMB session and initiates the request.\nUI:R - A victim must mount the malicious share or perform an operation such as statfs, ACL access, notification, or file access that causes SMB2_open() to run.\nS:U - The double-free corrupts memory within the client kernel's existing security authority and does not inherently cross a VM or IOMMU boundary.\nC:H - The double-free can produce overlapping live SMB buffers and use-after-free access, supporting kernel-memory disclosure and arbitrary-read exploitation.\nI:H - Reallocation of the freed mempool object permits attacker-controlled network data to corrupt live kernel objects or allocator metadata, enabling arbitrary writes or control-flow hijacking.\nA:H - The double-free can immediately trigger allocator diagnostics or heap corruption leading to a kernel oops or panic, and the server can repeatedly retrigger it."
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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/smb/client/smb2pdu.c"
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],
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"versions": [
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{
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"version": "433042a91f9373241307725b52de573933ffedbf",
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"lessThan": "02bc2896bdc3e29362d6e40d404006944a159c25",
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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": "4f1fffa2376922f3d1d506e49c0fd445b023a28e",
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"lessThan": "3196b5192f246df4272072f61a2f4a3e9967f55d",
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"status": "affected",
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},
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"lessThan": "14498ff5ce0f272ce0ef988721413e06b7038972",
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"status": "affected",
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"lessThan": "ff2d30927bc3bf3c629f0768d2068096e64ef5ce",
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"status": "affected",
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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": "6.6.32",
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"lessThan": "6.6.145",
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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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"fs/smb/client/smb2pdu.c"
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],
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"versions": [
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{
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"version": "6.8",
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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": "6.8",
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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": "6.6.145",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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},
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{
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"version": "6.12.96",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.39",
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"lessThanOrEqual": "6.18.*",
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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": "7.1.4",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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"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": "6.6.32",
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"versionEndExcluding": "6.6.145"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/02bc2896bdc3e29362d6e40d404006944a159c25"
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},
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{
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"url": "https://git.kernel.org/stable/c/3196b5192f246df4272072f61a2f4a3e9967f55d"
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},
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{
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"url": "https://git.kernel.org/stable/c/14498ff5ce0f272ce0ef988721413e06b7038972"
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},
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{
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"url": "https://git.kernel.org/stable/c/ff2d30927bc3bf3c629f0768d2068096e64ef5ce"
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},
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{
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"url": "https://git.kernel.org/stable/c/b55e182f2324bc6a604c21a47aa6c448f719a532"
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}
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],
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"title": "smb: client: fix double-free in SMB2_open() replay",
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"x_generator": {
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"engine": "bippy-1.2.0"
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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-2026-64382",
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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": "2026-10-16T15:39:50.312133Z"
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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-415",
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"description": "CWE-415 Double 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": "2026-10-19T20:38:25.998Z"
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} |