298 lines
16 KiB
JSON
298 lines
16 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-2026-74508",
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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": "2026-08-15T05:44:03.908Z",
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"datePublished": "2026-08-15T12:27:31.288Z",
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"dateUpdated": "2026-10-16T19:05:51.205Z"
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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": "2026-08-23T12:47:28.838Z"
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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: HIDP: reject frames without a transaction header\n\nhidp_recv_ctrl_frame() and hidp_recv_intr_frame() read skb->data[0]\nbefore checking that the L2CAP SDU contains a transaction header. A\nconnected HIDP peer can send an empty basic-mode SDU and make both paths\nuse an uninitialized byte from skb tailroom.\n\nKMSAN reports the use in hidp_session_run(), with the uninitialized value\noriginating in __alloc_skb() through vhci_write(). The control path\nproduces two reports and the interrupt path produces one.\n\nThe byte can also be controlled by a malformed lower-layer packet. If an\nHCI ACL packet contains an L2CAP PDU with a declared zero-length payload\nfollowed by an extra 0x15 byte, l2cap_recv_acldata() reduces skb->len to\nthe declared PDU length before dispatch. The current HIDP path nevertheless\nconsumes the extra byte as HIDP_TRANS_HID_CONTROL |\nHIDP_CTRL_VIRTUAL_CABLE_UNPLUG and terminates the HIDP session. With this\nchange, the same packet is discarded and a subsequent feature report\nrequest succeeds.\n\nPull the transaction header with skb_pull_data() and discard frames that\ndo not contain it."
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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 - Malicious or malformed Bluetooth L2CAP SDUs reach hidp_recv_ctrl_frame()/hidp_recv_intr_frame() from a radio-adjacent peer via hci_acl_packet() -> l2cap_recv_acldata() -> l2cap_recv_frame() -> l2cap_sock_recv_cb() -> hidp_session_run().\nAC:L - A connected HIDP peer reliably triggers the bug by sending empty basic-mode SDUs or zero-length L2CAP PDUs with trailing bytes; the attacker controls both sides of the malformed-packet condition without races or rare kernel configs.\nPR:N - Exploitation requires only delivering crafted Bluetooth ACL/L2CAP traffic as the connected peer; the victim attacker does not need local accounts, capabilities, or CAP_NET_ADMIN on the target host.\nUI:N - Once a normal Bluetooth HID session is active (typical paired keyboard/mouse/headset use), the attacker can send malicious frames without any additional victim interaction during exploitation.\nS:U - The flaw affects kernel Bluetooth HIDP session handling only and does not cross VM, container, or IOMMU security boundaries; impact stays within the kernel Bluetooth/HID authority.\nC:H - On zero-length SDUs, hidp_recv_*_frame() reads skb->data[0] from uninitialized skb tailroom (KMSAN via vhci_write/__alloc_skb), leaking kernel heap bytes that drive subsequent protocol parsing.\nI:H - Attacker-controlled header bytes (e.g., malformed PDU trailing 0x15 = HIDP_TRANS_HID_CONTROL|HIDP_CTRL_VIRTUAL_CABLE_UNPLUG) force hidp_process_hid_control() to tear down sessions and can misroute other transaction types through handshake/data handlers.\nA:H - Forged virtual-cable-unplug and related control-path handling forcibly terminates active HIDP sessions, completely denying Bluetooth HID input/output on phones, laptops, kiosks, and embedded systems until reconnect."
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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/hidp/core.c"
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],
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"versions": [
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "24c64ccd5c1fc9934b427335b0d976c7f2b1a7d8",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "238c333bc4b3f245c626632e8bfa3c9dab97f51b",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "567a2a0a633f2ea5fdccaf3517c09f22c9d860c7",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "46ca5ab39737d7c6f9ca77ecf714cdcfa6caaeec",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "97b61241ab45bfa5b0526cb0f3978942493bc811",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "2ebf63aa557a69990b4e9ea22be224d58aabce96",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "854194494a6f726a60b90b76059148bf08df023d",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "47778d2c2087b5d192398f6fddf692d16a5431cf",
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"status": "affected",
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"versionType": "git"
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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/hidp/core.c"
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],
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"versions": [
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{
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"version": "2.6.12",
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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": "2.6.12",
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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": "5.10.266",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.216",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.183",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.151",
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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": "6.12.103",
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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": "6.18.44",
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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": "2.6.12",
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"versionEndExcluding": "5.10.266"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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/24c64ccd5c1fc9934b427335b0d976c7f2b1a7d8"
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},
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{
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"url": "https://git.kernel.org/stable/c/238c333bc4b3f245c626632e8bfa3c9dab97f51b"
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},
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{
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"url": "https://git.kernel.org/stable/c/567a2a0a633f2ea5fdccaf3517c09f22c9d860c7"
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},
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{
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"url": "https://git.kernel.org/stable/c/46ca5ab39737d7c6f9ca77ecf714cdcfa6caaeec"
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},
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{
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"url": "https://git.kernel.org/stable/c/97b61241ab45bfa5b0526cb0f3978942493bc811"
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},
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{
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"url": "https://git.kernel.org/stable/c/2ebf63aa557a69990b4e9ea22be224d58aabce96"
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},
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{
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"url": "https://git.kernel.org/stable/c/854194494a6f726a60b90b76059148bf08df023d"
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},
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{
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"url": "https://git.kernel.org/stable/c/47778d2c2087b5d192398f6fddf692d16a5431cf"
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}
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],
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"title": "Bluetooth: HIDP: reject frames without a transaction header",
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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-2026-74508",
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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": "2026-10-16T18:58:35.164112Z"
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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": "2026-10-16T19:05:51.205Z"
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}
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}
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]
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}
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} |