340 lines
17 KiB
JSON
340 lines
17 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-2026-52918",
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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": "2026-06-09T07:44:35.367Z",
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"datePublished": "2026-06-24T07:14:14.539Z",
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"dateUpdated": "2026-10-19T19:37:00.541Z"
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},
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"containers": {
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"cna": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:31:40.163Z"
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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: serialize accept_q access\n\nbt_sock_poll() walks the accept queue without synchronization, while\nchild teardown can unlink the same socket and drop its last reference.\nThe unsynchronized accept queue walk has existed since the initial\nBluetooth import.\n\nProtect accept_q with a dedicated lock for queue updates and polling.\nAlso rework bt_accept_dequeue() to take temporary child references under\nthe queue lock before dropping it and locking the child socket."
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}
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],
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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 - The vulnerable accept queue is in the Bluetooth socket stack and is reachable through nearby Bluetooth peers opening and tearing down L2CAP/RFCOMM-style connections to a listening Bluetooth service.\nAC:L - The race can be exercised repeatedly by driving connection and disconnection activity while the listener polls/accepts, and no rare kernel configuration or condition outside the attacker’s reasonable influence is required.\nPR:N - An adjacent Bluetooth peer can reach the incoming connection and teardown paths without local system privileges or prior authenticated application access in low-security/default Bluetooth service scenarios.\nUI:N - No victim user action is required once the Bluetooth service/socket is listening; the attacker can initiate the relevant Bluetooth protocol traffic.\nS:U - The bug affects kernel Bluetooth socket state within the same host security authority and does not cross a VM, IOMMU, or similar security boundary.\nC:H - The bug is a use-after-free/unsynchronized traversal of freed socket objects; under the required conservative scoring rule, UAF exposure is treated as potentially enabling high-impact kernel information disclosure.\nI:H - The fixed code also pins children during dequeue to prevent references to freed objects, and UAF/refcount operations on reclaimed kernel memory are conservatively treated as potentially enabling memory corruption or control-flow compromise.\nA:H - A failed race or invalid traversal can dereference freed or attacker-influenced kernel memory, producing a kernel oops/panic or repeated Bluetooth service/kernel disruption."
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}
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]
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}
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{
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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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"include/net/bluetooth/bluetooth.h",
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"net/bluetooth/af_bluetooth.c"
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"include/net/bluetooth/bluetooth.h",
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"net/bluetooth/af_bluetooth.c"
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],
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{
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"version": "2.6.12",
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"version": "0",
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{
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"version": "5.10.259",
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"version": "6.18.34",
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"status": "unaffected",
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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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"version": "7.1",
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},
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},
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"url": "https://git.kernel.org/stable/c/85f8674cae82053f1e6bab295f6a8422cca14db5"
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},
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"url": "https://git.kernel.org/stable/c/8b4c412e001b0c670eb937beab491af974da55b3"
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}
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],
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"title": "Bluetooth: serialize accept_q access",
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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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"x_adpType": "supplier",
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"providerMetadata": {
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"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
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"shortName": "siemens-SADP",
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"dateUpdated": "2026-10-15T01:21:49.244Z"
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},
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"affected": [
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{
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
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"versions": [
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{
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"status": "affected",
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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://cert-portal.siemens.com/productcert/html/ssa-784472.html"
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}
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]
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},
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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-2026-52918",
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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": "2026-10-16T15:22:41.536262Z"
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}
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}
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}
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],
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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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"dateUpdated": "2026-10-19T19:37:00.541Z"
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}
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}
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]
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}
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} |