257 lines
13 KiB
JSON
257 lines
13 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-2026-80692",
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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": "2026-08-26T14:34:25.785Z",
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"datePublished": "2026-08-28T06:52:55.529Z",
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"dateUpdated": "2026-10-21T12:46:52.785Z"
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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": "2026-10-21T12:46:52.785Z"
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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\nBluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks\n\nThere is theoretical UAF if the conn is freed while the hci_sync task\nis running.\n\nHold refcount to avoid that."
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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:A/AC:L/PR:N/UI:N/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:A - Bluetooth HCI outgoing ACL/LE connection setup (hci_connect_acl_sync/hci_connect_le_sync) is driven by adjacent radio peers supplying HCI events (connection complete/failures, command status) while hci_cmd_sync_work blocks on controller replies on phones and laptops.\nAC:L - Race between hci_cmd_sync_work using a bare hci_conn pointer and hci_conn_del/hci_conn_failed/create_le_conn_complete teardown; attacker controls both sides by concurrently initiating L2CAP/MGMT connects and aborting or inducing remote HCI failure events until the window hits.\nPR:N - Adjacent Bluetooth peers need no Linux credentials; freeing runs on unauthenticated HCI connection events, and local triggering works via unprivileged AF_BLUETOOTH L2CAP connect() without CAP_NET_ADMIN or special namespaces.\nUI:N - Background Bluetooth auto-reconnect, pairing flows, or listening socket-driven outgoing connects create BT_OPEN hci_conn objects without deliberate user action; attacker timing of connect/teardown does not require social engineering.\nS:U - Kernel heap UAF within the Bluetooth stack enables local privilege escalation in the same kernel domain but does not cross VM, IOMMU, or sandbox boundaries.\nC:H - Freed struct hci_conn is dereferenced in hci_acl_create_conn_sync, hci_le_create_conn_sync, and create_le_conn_complete (e.g., conn->pkt_type, conn->dst, conn->le_conn_timeout), enabling slab reuse and arbitrary kernel memory disclosure.\nI:H - Post-free writes occur to conn fields (state, flags, timers) and function-pointer members (cleanup, connect_cfm_cb), providing groomable heap corruption suitable for arbitrary kernel write and code execution.\nA:H - UAF during hci_cmd_sync_work on connection setup reliably causes kernel oops/panic and can be retriggered by repeated connect/abort cycles from adjacent or local attackers."
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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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"net/bluetooth/hci_sync.c"
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],
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"versions": [
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{
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"version": "d948e1ffa1d40240d5c81af6dcbcb87b39cb8d3c",
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"lessThan": "f0a544ef6e38e4063d0ed72ad83d6bf0f4e70805",
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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": "881559af5f5c545f6828e7c74d79813eb886d523",
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"lessThan": "301a4e2e89313dee10f0e8cb084daedbbe4a3dce",
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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": "881559af5f5c545f6828e7c74d79813eb886d523",
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"lessThan": "a4de6fc95b2f36967fc247ae51cad2171194f7cd",
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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": "881559af5f5c545f6828e7c74d79813eb886d523",
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"lessThan": "9a77f296aff4b2ca5f2928ab3a3220c82d8b4074",
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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": "881559af5f5c545f6828e7c74d79813eb886d523",
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"lessThan": "2f5d635ad5906b0235bc0c870e8beba3116e1e98",
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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": "5dd0bd277a0a936708a33ecc447dce77a08cbde6",
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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": "6.6.51",
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"lessThan": "6.6.160",
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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": "6.8.9",
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"lessThan": "6.9",
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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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"net/bluetooth/hci_sync.c"
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],
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"versions": [
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{
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"version": "6.9",
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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": "6.9",
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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": "6.6.160",
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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": "6.12.114",
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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": "6.18.57",
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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": "7.1.8",
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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": "6.6.51",
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"versionEndExcluding": "6.6.160"
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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": "6.9",
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"versionEndExcluding": "6.12.114"
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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": "6.9",
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"versionEndExcluding": "6.18.57"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.9",
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"versionEndExcluding": "7.1.8"
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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": "6.9",
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"versionEndExcluding": "7.2"
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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": "6.8.9"
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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/f0a544ef6e38e4063d0ed72ad83d6bf0f4e70805"
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},
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{
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"url": "https://git.kernel.org/stable/c/301a4e2e89313dee10f0e8cb084daedbbe4a3dce"
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},
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{
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"url": "https://git.kernel.org/stable/c/a4de6fc95b2f36967fc247ae51cad2171194f7cd"
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},
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{
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"url": "https://git.kernel.org/stable/c/9a77f296aff4b2ca5f2928ab3a3220c82d8b4074"
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},
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{
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"url": "https://git.kernel.org/stable/c/2f5d635ad5906b0235bc0c870e8beba3116e1e98"
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}
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],
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"title": "Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks",
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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-2026-80692",
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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": "2026-10-16T19:20:08.082830Z"
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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": "2026-10-16T19:26:33.571Z"
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}
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}
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]
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}
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} |