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-2026-64385",
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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": "2026-07-25T08:50:33.997Z",
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"dateUpdated": "2026-10-19T20:38:26.437Z"
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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": "2026-08-17T04:54:37.258Z"
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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_ioctl() replay\n\nA response-bearing attempt can return a replayable error and free its\nresponse buffer. If SMB2_ioctl_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: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 - An attacker-controlled SMB server can deliver crafted SMB2 IOCTL responses over TCP, including through the kernel's periodic interface-query FSCTL on an existing SMB3 mount.\nAC:L - On a hard or retrans-enabled mount, the server controls replayable statuses, response contents, disconnects, reconnects, and repeated attempts, allowing it to drive both sides of the triggering sequence.\nPR:N - The malicious SMB server needs no account or privilege on the target; victim mounting authority and client authentication do not grant or require attacker-side target privileges.\nUI:N - Once the share is mounted, kernel delayed work can automatically issue the affected FSCTL when the server advertises multichannel support, requiring no user action during exploitation.\nS:U - The memory corruption compromises resources governed by the same host-kernel security authority and does not inherently cross a VM, container, or IOMMU boundary.\nC:H - The response-buffer double-free can corrupt SLUB or mempool state and create dangling or overlapping live buffers, enabling use-after-free exploitation and kernel-memory disclosure.\nI:H - Attacker-controlled network data can overwrite aliased or freed buffers and poison allocator state, supporting arbitrary writes and control-flow hijacking.\nA:H - The duplicate free can trigger an allocator BUG or corrupt kernel heap state, causing an oops, panic, or complete system crash."
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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": "0be4bc64882edaefaaee8d1e27d083643eb778e6",
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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": "96fcfc8ae7359346156e492ca610e830d2649ad6",
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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": "276c8efbc49f9303ac76d0d4deab7128581b0f3b",
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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": "fc65ffb4ef1bf540da16b17c225ae51091e07d72",
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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": "f9bbadb6c94583e3b4af1afc449bfceb1d1ddec9",
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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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"versionType": "semver"
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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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{
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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": "6.6.32",
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"versionEndExcluding": "6.6.145"
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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": "6.8",
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"versionEndExcluding": "6.12.96"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.8",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.8",
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"versionEndExcluding": "7.1.4"
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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": "6.8",
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"versionEndExcluding": "7.2"
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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/0be4bc64882edaefaaee8d1e27d083643eb778e6"
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},
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{
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"url": "https://git.kernel.org/stable/c/96fcfc8ae7359346156e492ca610e830d2649ad6"
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},
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{
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"url": "https://git.kernel.org/stable/c/276c8efbc49f9303ac76d0d4deab7128581b0f3b"
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},
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{
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"url": "https://git.kernel.org/stable/c/fc65ffb4ef1bf540da16b17c225ae51091e07d72"
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},
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{
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"url": "https://git.kernel.org/stable/c/f9bbadb6c94583e3b4af1afc449bfceb1d1ddec9"
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}
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],
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"title": "smb: client: fix double-free in SMB2_ioctl() replay",
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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-2026-64385",
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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": "2026-10-16T15:39:57.224081Z"
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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": "2026-10-19T20:38:26.437Z"
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}
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}
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]
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}
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} |