238 lines
11 KiB
JSON
238 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-2026-31609",
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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": "2026-03-09T15:48:24.122Z",
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"datePublished": "2026-04-24T14:42:30.797Z",
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"dateUpdated": "2026-10-19T18:56:00.237Z"
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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": "2026-08-05T12:23:48.014Z"
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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: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush()\n\nsmbd_send_batch_flush() already calls smbd_free_send_io(),\nso we should not call it again after smbd_post_send()\nmoved it to the batch list."
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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 vulnerable path is in the SMB client SMB Direct/RDMA transport and processes protocol events from a remote SMB Direct peer over the network.\nAC:L - A malicious peer can request immediate empty responses and then disrupt the RDMA connection to drive the post-send error path; the trigger is repeatable and does not depend on conditions outside attacker influence.\nPR:N - The attacker is the remote SMB Direct peer/server and does not need privileges on the vulnerable client system or authenticated local access.\nUI:N - In a reasonable deployment with an existing or automatically established SMB Direct mount, the remote peer can trigger the bug through protocol traffic and disconnect timing without further user action.\nS:U - The corruption occurs in the client kernel and impacts the same operating-system security authority, with no VM, IOMMU, or sandbox boundary crossing identified.\nC:H - This is a kernel heap double-free of an SMB Direct send object; as memory corruption, it can plausibly be shaped into use-after-free behavior and kernel memory disclosure.\nI:H - The double-free corrupts kernel allocator state for objects used in RDMA send handling and can plausibly be leveraged for arbitrary kernel memory modification or code execution.\nA:H - Even without full exploitation, the double-free can trigger allocator corruption, warnings, oops, panic, or connection teardown, causing high availability impact."
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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/smbdirect.c"
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],
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"versions": [
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{
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"version": "cca0526ef2344cab6944d7f441fc24e152da031b",
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"lessThan": "a9940dcbe5cb92482c04efc7341039ddf7dbf607",
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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": "37b5c06956183b65e6808b509cf637632016cdf7",
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"lessThan": "22b7c1c619d808aec4cad3dc42103345e370d107",
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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": "21538121efe6c8c5b51c742fa02cbe820bc48714",
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"lessThan": "f9a162c2bbcd0ac85bd07c5b37cf20286048b65c",
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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": "21538121efe6c8c5b51c742fa02cbe820bc48714",
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"lessThan": "27b7c3e916218b5eb2ee350211140e961bfc49be",
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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": "6.18.11",
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"lessThan": "6.18.24",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.19.1",
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"lessThan": "6.19.14",
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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/smbdirect.c"
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],
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"versions": [
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{
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"version": "7.0",
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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": "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": "6.18.24",
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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": "6.19.14",
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"lessThanOrEqual": "6.19.*",
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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": "7.0.1",
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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": "6.18.11",
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"versionEndExcluding": "6.18.24"
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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": "6.19.1",
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"versionEndExcluding": "6.19.14"
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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": "7.0",
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"versionEndExcluding": "7.0.1"
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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": "7.0",
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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/a9940dcbe5cb92482c04efc7341039ddf7dbf607"
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},
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{
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"url": "https://git.kernel.org/stable/c/22b7c1c619d808aec4cad3dc42103345e370d107"
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},
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{
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"url": "https://git.kernel.org/stable/c/f9a162c2bbcd0ac85bd07c5b37cf20286048b65c"
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},
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{
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"url": "https://git.kernel.org/stable/c/27b7c3e916218b5eb2ee350211140e961bfc49be"
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}
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],
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"title": "smb: client: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush()",
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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-2026-31609",
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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": "2026-10-16T15:11:13.445840Z"
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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": "2026-10-19T18:56:00.237Z"
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}
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}
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]
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}
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} |